55733691 has 16 divisors (see below), whose sum is σ = 82611200. Its totient is φ = 33190560.

The previous prime is 55733683. The next prime is 55733693. The reversal of 55733691 is 19633755.

It is not a de Polignac number, because 55733691 - 2³ = 55733683 is a prime.

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

It is a Harshad number since it is a multiple of its sum of digits (39).

It is the 7466-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55733693) by changing a digit.

It is a nontrivial repunit in base 7465.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21841 + ... + 24258.

It is an arithmetic number, because the mean of its divisors is an integer number (5163200).

Almost surely, 2^55733691 is an apocalyptic number.

55733691 is a deficient number, since it is larger than the sum of its proper divisors (26877509).

55733691 is a wasteful number, since it uses less digits than its factorization.

55733691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46146.

The product of its digits is 85050, while the sum is 39.

The square root of 55733691 is about 7465.5000502311. The cubic root of 55733691 is about 381.9788074279.

The spelling of 55733691 in words is "fifty-five million, seven hundred thirty-three thousand, six hundred ninety-one".