87917955 has 16 divisors (see below), whose sum is σ = 141916320. Its totient is φ = 46473728.

The previous prime is 87917939. The next prime is 87917993. The reversal of 87917955 is 55971978.

It is a cyclic number.

It is not a de Polignac number, because 87917955 - 2⁴ = 87917939 is a prime.

It is a super-2 number, since 2×87917955² = 15459133622764050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87917898 and 87917907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24240 + ... + 27629.

It is an arithmetic number, because the mean of its divisors is an integer number (8869770).

Almost surely, 2^87917955 is an apocalyptic number.

87917955 is a deficient number, since it is larger than the sum of its proper divisors (53998365).

87917955 is a wasteful number, since it uses less digits than its factorization.

87917955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51990.

The product of its digits is 793800, while the sum is 51.

The square root of 87917955 is about 9376.4574867057. The cubic root of 87917955 is about 444.6577429758.

The spelling of 87917955 in words is "eighty-seven million, nine hundred seventeen thousand, nine hundred fifty-five".