55913081 has 8 divisors (see below), whose sum is σ = 64271424. Its totient is φ = 47647440.

The previous prime is 55913071. The next prime is 55913087. The reversal of 55913081 is 18031955.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55913081 is a prime.

It is a super-2 number, since 2×55913081² = 6252545253825122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55913087) 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, 21875 + ... + 24296.

It is an arithmetic number, because the mean of its divisors is an integer number (8033928).

Almost surely, 2^55913081 is an apocalyptic number.

It is an amenable number.

55913081 is a deficient number, since it is larger than the sum of its proper divisors (8358343).

55913081 is a wasteful number, since it uses less digits than its factorization.

55913081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46351.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 55913081 is about 7477.5049983266. The cubic root of 55913081 is about 382.3881935024.

The spelling of 55913081 in words is "fifty-five million, nine hundred thirteen thousand, eighty-one".