55252657 has 2 divisors, whose sum is σ = 55252658. Its totient is φ = 55252656.

The previous prime is 55252649. The next prime is 55252661. The reversal of 55252657 is 75625255.

It is a happy number.

55252657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32251041 + 23001616 = 5679^2 + 4796^2 .

It is a cyclic number.

It is not a de Polignac number, because 55252657 - 2³ = 55252649 is a prime.

It is a super-2 number, since 2×55252657² = 6105712211119298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55252667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626328 + 27626329.

It is an arithmetic number, because the mean of its divisors is an integer number (27626329).

Almost surely, 2^55252657 is an apocalyptic number.

It is an amenable number.

55252657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55252657 is an equidigital number, since it uses as much as digits as its factorization.

55252657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105000, while the sum is 37.

The square root of 55252657 is about 7433.2131006719. The cubic root of 55252657 is about 380.8766854754.

The spelling of 55252657 in words is "fifty-five million, two hundred fifty-two thousand, six hundred fifty-seven".