88620521 has 12 divisors (see below), whose sum is σ = 99488256. Its totient is φ = 78844920.

The previous prime is 88620517. The next prime is 88620527. The reversal of 88620521 is 12502688.

It is not a de Polignac number, because 88620521 - 2² = 88620517 is a prime.

It is a super-2 number, since 2×88620521² = 15707193484622882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88620527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2105 + ... + 13478.

It is an arithmetic number, because the mean of its divisors is an integer number (8290688).

Almost surely, 2^88620521 is an apocalyptic number.

It is an amenable number.

88620521 is a deficient number, since it is larger than the sum of its proper divisors (10867735).

88620521 is a wasteful number, since it uses less digits than its factorization.

88620521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15652 (or 15641 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 88620521 is about 9413.8473006524. The cubic root of 88620521 is about 445.8390448585.

The spelling of 88620521 in words is "eighty-eight million, six hundred twenty thousand, five hundred twenty-one".