55730957 has 2 divisors, whose sum is σ = 55730958. Its totient is φ = 55730956.

The previous prime is 55730951. The next prime is 55730989. The reversal of 55730957 is 75903755.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42328036 + 13402921 = 6506^2 + 3661^2 .

It is a cyclic number.

It is not a de Polignac number, because 55730957 - 2¹⁴ = 55714573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55730951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27865478 + 27865479.

It is an arithmetic number, because the mean of its divisors is an integer number (27865479).

Almost surely, 2^55730957 is an apocalyptic number.

It is an amenable number.

55730957 is a deficient number, since it is larger than the sum of its proper divisors (1).

55730957 is an equidigital number, since it uses as much as digits as its factorization.

55730957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165375, while the sum is 41.

The square root of 55730957 is about 7465.3169390187. The cubic root of 55730957 is about 381.9725613726.

The spelling of 55730957 in words is "fifty-five million, seven hundred thirty thousand, nine hundred fifty-seven".