87500477 has 2 divisors, whose sum is σ = 87500478. Its totient is φ = 87500476.

The previous prime is 87500473. The next prime is 87500489. The reversal of 87500477 is 77400578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59505796 + 27994681 = 7714^2 + 5291^2 .

It is a cyclic number.

It is not a de Polignac number, because 87500477 - 2² = 87500473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87500477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87500473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43750238 + 43750239.

It is an arithmetic number, because the mean of its divisors is an integer number (43750239).

Almost surely, 2^87500477 is an apocalyptic number.

It is an amenable number.

87500477 is a deficient number, since it is larger than the sum of its proper divisors (1).

87500477 is an equidigital number, since it uses as much as digits as its factorization.

87500477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 87500477 is about 9354.1689636226. The cubic root of 87500477 is about 443.9528075940.

The spelling of 87500477 in words is "eighty-seven million, five hundred thousand, four hundred seventy-seven".