87772351 has 4 divisors (see below), whose sum is σ = 89211304. Its totient is φ = 86333400.

The previous prime is 87772327. The next prime is 87772369. The reversal of 87772351 is 15327778.

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 87772351 - 2⁵ = 87772319 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 (87772051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719385 + ... + 719506.

It is an arithmetic number, because the mean of its divisors is an integer number (22302826).

Almost surely, 2^87772351 is an apocalyptic number.

87772351 is a deficient number, since it is larger than the sum of its proper divisors (1438953).

87772351 is a wasteful number, since it uses less digits than its factorization.

87772351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438952.

The product of its digits is 82320, while the sum is 40.

The square root of 87772351 is about 9368.6899297607. The cubic root of 87772351 is about 444.4121362603.

The spelling of 87772351 in words is "eighty-seven million, seven hundred seventy-two thousand, three hundred fifty-one".