55926691 has 4 divisors (see below), whose sum is σ = 56843584. Its totient is φ = 55009800.

The previous prime is 55926683. The next prime is 55926727. The reversal of 55926691 is 19662955.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 55926691 - 2³ = 55926683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55926641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458355 + ... + 458476.

It is an arithmetic number, because the mean of its divisors is an integer number (14210896).

Almost surely, 2^55926691 is an apocalyptic number.

55926691 is a deficient number, since it is larger than the sum of its proper divisors (916893).

55926691 is an equidigital number, since it uses as much as digits as its factorization.

55926691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916892.

The product of its digits is 145800, while the sum is 43.

The square root of 55926691 is about 7478.4150058686. The cubic root of 55926691 is about 382.4192171378.

The spelling of 55926691 in words is "fifty-five million, nine hundred twenty-six thousand, six hundred ninety-one".