87255763 has 4 divisors (see below), whose sum is σ = 99720880. Its totient is φ = 74790648.

The previous prime is 87255761. The next prime is 87255787. The reversal of 87255763 is 36755278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87255763 - 2¹ = 87255761 is a prime.

It is a super-2 number, since 2×87255763² = 15227136353424338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87255761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6232548 + ... + 6232561.

It is an arithmetic number, because the mean of its divisors is an integer number (24930220).

Almost surely, 2^87255763 is an apocalyptic number.

87255763 is a deficient number, since it is larger than the sum of its proper divisors (12465117).

87255763 is a wasteful number, since it uses less digits than its factorization.

87255763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12465116.

The product of its digits is 352800, while the sum is 43.

The square root of 87255763 is about 9341.0793273583. The cubic root of 87255763 is about 443.5385511674.

The spelling of 87255763 in words is "eighty-seven million, two hundred fifty-five thousand, seven hundred sixty-three".