88402521 has 4 divisors (see below), whose sum is σ = 117870032. Its totient is φ = 58935012.

The previous prime is 88402513. The next prime is 88402577. The reversal of 88402521 is 12520488.

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 not a de Polignac number, because 88402521 - 2³ = 88402513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88402021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14733751 + ... + 14733756.

It is an arithmetic number, because the mean of its divisors is an integer number (29467508).

Almost surely, 2^88402521 is an apocalyptic number.

It is an amenable number.

88402521 is a deficient number, since it is larger than the sum of its proper divisors (29467511).

88402521 is a wasteful number, since it uses less digits than its factorization.

88402521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29467510.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 88402521 is about 9402.2614832816. The cubic root of 88402521 is about 445.4731675365.

The spelling of 88402521 in words is "eighty-eight million, four hundred two thousand, five hundred twenty-one".