87545057 has 2 divisors, whose sum is σ = 87545058. Its totient is φ = 87545056.

The previous prime is 87545039. The next prime is 87545077. The reversal of 87545057 is 75054578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84070561 + 3474496 = 9169^2 + 1864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87545057 is a prime.

It is not a weakly prime, because it can be changed into another prime (87545077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43772528 + 43772529.

It is an arithmetic number, because the mean of its divisors is an integer number (43772529).

Almost surely, 2^87545057 is an apocalyptic number.

It is an amenable number.

87545057 is a deficient number, since it is larger than the sum of its proper divisors (1).

87545057 is an equidigital number, since it uses as much as digits as its factorization.

87545057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196000, while the sum is 41.

The square root of 87545057 is about 9356.5515549266. The cubic root of 87545057 is about 444.0281902535.

The spelling of 87545057 in words is "eighty-seven million, five hundred forty-five thousand, fifty-seven".