87792517 has 4 divisors (see below), whose sum is σ = 87841120. Its totient is φ = 87743916.

The previous prime is 87792511. The next prime is 87792547. The reversal of 87792517 is 71529778.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87792517 - 2⁷ = 87792389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87792511) 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, 21483 + ... + 25240.

It is an arithmetic number, because the mean of its divisors is an integer number (21960280).

Almost surely, 2^87792517 is an apocalyptic number.

It is an amenable number.

87792517 is a deficient number, since it is larger than the sum of its proper divisors (48603).

87792517 is a wasteful number, since it uses less digits than its factorization.

87792517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48602.

The product of its digits is 246960, while the sum is 46.

The square root of 87792517 is about 9369.7661123424. The cubic root of 87792517 is about 444.4461687271.

The spelling of 87792517 in words is "eighty-seven million, seven hundred ninety-two thousand, five hundred seventeen".