75455657 has 2 divisors, whose sum is σ = 75455658. Its totient is φ = 75455656.

The previous prime is 75455641. The next prime is 75455683. The reversal of 75455657 is 75655457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68079001 + 7376656 = 8251^2 + 2716^2 .

It is a cyclic number.

It is not a de Polignac number, because 75455657 - 2⁴ = 75455641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75455057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37727828 + 37727829.

It is an arithmetic number, because the mean of its divisors is an integer number (37727829).

Almost surely, 2^75455657 is an apocalyptic number.

It is an amenable number.

75455657 is a deficient number, since it is larger than the sum of its proper divisors (1).

75455657 is an equidigital number, since it uses as much as digits as its factorization.

75455657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 735000, while the sum is 44.

The square root of 75455657 is about 8686.5215708015. The cubic root of 75455657 is about 422.5686444726.

The spelling of 75455657 in words is "seventy-five million, four hundred fifty-five thousand, six hundred fifty-seven".