55362981 has 12 divisors (see below), whose sum is σ = 74863968. Its totient is φ = 36392544.

The previous prime is 55362961. The next prime is 55362991. The reversal of 55362981 is 18926355.

55362981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55362981 - 2⁵ = 55362949 is a prime.

It is a super-2 number, since 2×55362981² = 6130119330412722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55362911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14256 + ... + 17718.

It is an arithmetic number, because the mean of its divisors is an integer number (6238664).

Almost surely, 2^55362981 is an apocalyptic number.

It is an amenable number.

55362981 is a deficient number, since it is larger than the sum of its proper divisors (19500987).

55362981 is an equidigital number, since it uses as much as digits as its factorization.

55362981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3539 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 55362981 is about 7440.6304168397. The cubic root of 55362981 is about 381.1300181080.

The spelling of 55362981 in words is "fifty-five million, three hundred sixty-two thousand, nine hundred eighty-one".