55972134 has 72 divisors (see below), whose sum is σ = 131308632. Its totient is φ = 17858880.

The previous prime is 55972121. The next prime is 55972139. The reversal of 55972134 is 43127955.

55972134 is a `hidden beast` number, since 559 + 72 + 1 + 34 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55972139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1056052 + ... + 1056104.

It is an arithmetic number, because the mean of its divisors is an integer number (1823731).

Almost surely, 2^55972134 is an apocalyptic number.

55972134 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55972134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65654316).

55972134 is an abundant number, since it is smaller than the sum of its proper divisors (75336498).

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

55972134 is an equidigital number, since it uses as much as digits as its factorization.

55972134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 99 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 55972134 is about 7481.4526664278. The cubic root of 55972134 is about 382.5227668110.

The spelling of 55972134 in words is "fifty-five million, nine hundred seventy-two thousand, one hundred thirty-four".