102156552 has 40 divisors (see below), whose sum is σ = 286134750. Its totient is φ = 34051968.

The previous prime is 102156539. The next prime is 102156557. The reversal of 102156552 is 255651201.

102156552 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 5 + 655 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95531076 + 6625476 = 9774^2 + 2574^2 .

It is a super-2 number, since 2×102156552² = 20871922233057408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78177 + ... + 79472.

Almost surely, 2^102156552 is an apocalyptic number.

102156552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102156552 is an abundant number, since it is smaller than the sum of its proper divisors (183978198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102156552 is a wasteful number, since it uses less digits than its factorization.

102156552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157667 (or 157654 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 102156552 is about 10107.2524456452. The cubic root of 102156552 is about 467.4717906473.

The spelling of 102156552 in words is "one hundred two million, one hundred fifty-six thousand, five hundred fifty-two".