55951913 has 8 divisors (see below), whose sum is σ = 59346432. Its totient is φ = 52568896.

The previous prime is 55951891. The next prime is 55951927. The reversal of 55951913 is 31915955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55951913 - 2⁶ = 55951849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55951963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8456 + ... + 13542.

It is an arithmetic number, because the mean of its divisors is an integer number (7418304).

Almost surely, 2^55951913 is an apocalyptic number.

It is an amenable number.

55951913 is a deficient number, since it is larger than the sum of its proper divisors (3394519).

55951913 is a wasteful number, since it uses less digits than its factorization.

55951913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751.

The product of its digits is 30375, while the sum is 38.

The square root of 55951913 is about 7480.1011356799. The cubic root of 55951913 is about 382.4766967164.

The spelling of 55951913 in words is "fifty-five million, nine hundred fifty-one thousand, nine hundred thirteen".