55155836 has 6 divisors (see below), whose sum is σ = 96522720. Its totient is φ = 27577916.

The previous prime is 55155829. The next prime is 55155839. The reversal of 55155836 is 63855155.

It is a self number, because there is not a number n which added to its sum of digits gives 55155836.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55155839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6894476 + ... + 6894483.

It is an arithmetic number, because the mean of its divisors is an integer number (16087120).

Almost surely, 2^55155836 is an apocalyptic number.

It is an amenable number.

55155836 is a deficient number, since it is larger than the sum of its proper divisors (41366884).

55155836 is a wasteful number, since it uses less digits than its factorization.

55155836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13788963 (or 13788961 counting only the distinct ones).

The product of its digits is 90000, while the sum is 38.

The square root of 55155836 is about 7426.6975163931. The cubic root of 55155836 is about 380.6540812621.

The spelling of 55155836 in words is "fifty-five million, one hundred fifty-five thousand, eight hundred thirty-six".