87726551 has 8 divisors (see below), whose sum is σ = 95779344. Its totient is φ = 79686720.

The previous prime is 87726547. The next prime is 87726557. The reversal of 87726551 is 15562778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87726551 - 2² = 87726547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87726499 and 87726508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87726557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15821 + ... + 20633.

It is an arithmetic number, because the mean of its divisors is an integer number (11972418).

Almost surely, 2^87726551 is an apocalyptic number.

87726551 is a deficient number, since it is larger than the sum of its proper divisors (8052793).

87726551 is a wasteful number, since it uses less digits than its factorization.

87726551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481.

The product of its digits is 117600, while the sum is 41.

The square root of 87726551 is about 9366.2452989445. The cubic root of 87726551 is about 444.3348240736.

The spelling of 87726551 in words is "eighty-seven million, seven hundred twenty-six thousand, five hundred fifty-one".