102621056 has 32 divisors (see below), whose sum is σ = 204897600. Its totient is φ = 51195904.

The previous prime is 102621047. The next prime is 102621089. The reversal of 102621056 is 650126201.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×102621056² = 21062162269110272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110000 + ... + 110928.

It is an arithmetic number, because the mean of its divisors is an integer number (6403050).

Almost surely, 2^102621056 is an apocalyptic number.

102621056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

102621056 is a deficient number, since it is larger than the sum of its proper divisors (102276544).

102621056 is an frugal number, since it uses more digits than its factorization.

102621056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 102621056 is about 10130.2051311906. The cubic root of 102621056 is about 468.1792480640.

Adding to 102621056 its reverse (650126201), we get a palindrome (752747257).

The spelling of 102621056 in words is "one hundred two million, six hundred twenty-one thousand, fifty-six".