55263690 has 24 divisors (see below), whose sum is σ = 143685828. Its totient is φ = 14736960.

The previous prime is 55263679. The next prime is 55263697. The reversal of 55263690 is 9636255.

It can be written as a sum of positive squares in 2 ways, for example, as 54154881 + 1108809 = 7359^2 + 1053^2 .

It is a super-2 number, since 2×55263690² = 6108150864832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55263697) 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, 306931 + ... + 307110.

Almost surely, 2^55263690 is an apocalyptic number.

55263690 is an abundant number, since it is smaller than the sum of its proper divisors (88422138).

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

55263690 is a wasteful number, since it uses less digits than its factorization.

55263690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614054 (or 614051 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 55263690 is about 7433.9552056762. The cubic root of 55263690 is about 380.9020352837.

It can be divided in two parts, 5526 and 3690, that added together give a square (9216 = 96²).

The spelling of 55263690 in words is "fifty-five million, two hundred sixty-three thousand, six hundred ninety".