55181235 has 16 divisors (see below), whose sum is σ = 93483936. Its totient is φ = 27698688.

The previous prime is 55181233. The next prime is 55181257. The reversal of 55181235 is 53218155.

It is not a de Polignac number, because 55181235 - 2¹ = 55181233 is a prime.

It is a super-2 number, since 2×55181235² = 6089937392250450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55181233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107944 + ... + 108453.

It is an arithmetic number, because the mean of its divisors is an integer number (5842746).

Almost surely, 2^55181235 is an apocalyptic number.

55181235 is a deficient number, since it is larger than the sum of its proper divisors (38302701).

55181235 is a wasteful number, since it uses less digits than its factorization.

55181235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216422.

The product of its digits is 6000, while the sum is 30.

The square root of 55181235 is about 7428.4072990110. The cubic root of 55181235 is about 380.7125020932.

The spelling of 55181235 in words is "fifty-five million, one hundred eighty-one thousand, two hundred thirty-five".