102156553 has 16 divisors (see below), whose sum is σ = 110808000. Its totient is φ = 93824512.

The previous prime is 102156539. The next prime is 102156557. The reversal of 102156553 is 355651201.

It is a cyclic number.

It is not a de Polignac number, because 102156553 - 2¹⁷ = 102025481 is a prime.

It is a super-2 number, since 2×102156553² = 20871922641683618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102156557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179253 + ... + 179821.

It is an arithmetic number, because the mean of its divisors is an integer number (6925500).

Almost surely, 2^102156553 is an apocalyptic number.

It is an amenable number.

102156553 is a deficient number, since it is larger than the sum of its proper divisors (8651447).

102156553 is a wasteful number, since it uses less digits than its factorization.

102156553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 102156553 is about 10107.2524951146. The cubic root of 102156553 is about 467.4717921726.

The spelling of 102156553 in words is "one hundred two million, one hundred fifty-six thousand, five hundred fifty-three".