55790791 has 16 divisors (see below), whose sum is σ = 65620800. Its totient is φ = 46437120.

The previous prime is 55790789. The next prime is 55790831. The reversal of 55790791 is 19709755.

It is a cyclic number.

It is not a de Polignac number, because 55790791 - 2¹ = 55790789 is a prime.

It is a super-2 number, since 2×55790791² = 6225224720811362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55790741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99885 + ... + 100441.

It is an arithmetic number, because the mean of its divisors is an integer number (4101300).

Almost surely, 2^55790791 is an apocalyptic number.

55790791 is a deficient number, since it is larger than the sum of its proper divisors (9830009).

55790791 is a wasteful number, since it uses less digits than its factorization.

55790791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 99225, while the sum is 43.

The square root of 55790791 is about 7469.3233294590. The cubic root of 55790791 is about 382.1092105717.

The spelling of 55790791 in words is "fifty-five million, seven hundred ninety thousand, seven hundred ninety-one".