55252591 has 2 divisors, whose sum is σ = 55252592. Its totient is φ = 55252590.

The previous prime is 55252583. The next prime is 55252597. The reversal of 55252591 is 19525255.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55252591 - 2³ = 55252583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55252597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27626295 + 27626296.

It is an arithmetic number, because the mean of its divisors is an integer number (27626296).

Almost surely, 2^55252591 is an apocalyptic number.

55252591 is a deficient number, since it is larger than the sum of its proper divisors (1).

55252591 is an equidigital number, since it uses as much as digits as its factorization.

55252591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22500, while the sum is 34.

The square root of 55252591 is about 7433.2086611369. The cubic root of 55252591 is about 380.8765338213.

The spelling of 55252591 in words is "fifty-five million, two hundred fifty-two thousand, five hundred ninety-one".