55951938 has 32 divisors (see below), whose sum is σ = 142101120. Its totient is φ = 15986160.

The previous prime is 55951937. The next prime is 55951963. The reversal of 55951938 is 83915955.

55951938 is a `hidden beast` number, since 559 + 5 + 1 + 93 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55951893 and 55951902.

It is not an unprimeable number, because it can be changed into a prime (55951937) 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 15 ways as a sum of consecutive naturals, for example, 73633 + ... + 74388.

It is an arithmetic number, because the mean of its divisors is an integer number (4440660).

Almost surely, 2^55951938 is an apocalyptic number.

55951938 is an abundant number, since it is smaller than the sum of its proper divisors (86149182).

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

55951938 is a wasteful number, since it uses less digits than its factorization.

55951938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148039 (or 148033 counting only the distinct ones).

The product of its digits is 243000, while the sum is 45.

The square root of 55951938 is about 7480.1028067801. The cubic root of 55951938 is about 382.4767536814.

The spelling of 55951938 in words is "fifty-five million, nine hundred fifty-one thousand, nine hundred thirty-eight".