55331293 has 2 divisors, whose sum is σ = 55331294. Its totient is φ = 55331292.

The previous prime is 55331279. The next prime is 55331303. The reversal of 55331293 is 39213355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28270489 + 27060804 = 5317^2 + 5202^2 .

It is a cyclic number.

It is not a de Polignac number, because 55331293 - 2¹³ = 55323101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55331093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27665646 + 27665647.

It is an arithmetic number, because the mean of its divisors is an integer number (27665647).

Almost surely, 2^55331293 is an apocalyptic number.

It is an amenable number.

55331293 is a deficient number, since it is larger than the sum of its proper divisors (1).

55331293 is an equidigital number, since it uses as much as digits as its factorization.

55331293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 31.

The square root of 55331293 is about 7438.5007225919. The cubic root of 55331293 is about 381.0572886852.

The spelling of 55331293 in words is "fifty-five million, three hundred thirty-one thousand, two hundred ninety-three".