2156232052 has 12 divisors (see below), whose sum is σ = 4063668196. Its totient is φ = 995184000.

The previous prime is 2156231981. The next prime is 2156232101. The reversal of 2156232052 is 2502326512.

It can be written as a sum of positive squares in 2 ways, for example, as 669049956 + 1487182096 = 25866^2 + 38564^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2156232052.

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, 20732949 + ... + 20733052.

Almost surely, 2^2156232052 is an apocalyptic number.

It is an amenable number.

2156232052 is a deficient number, since it is larger than the sum of its proper divisors (1907436144).

2156232052 is a wasteful number, since it uses less digits than its factorization.

2156232052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41466018 (or 41466016 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2156232052 is about 46435.2457945471. The cubic root of 2156232052 is about 1291.9087285798.

Adding to 2156232052 its reverse (2502326512), we get a palindrome (4658558564).

The spelling of 2156232052 in words is "two billion, one hundred fifty-six million, two hundred thirty-two thousand, fifty-two".