55498791 has 16 divisors (see below), whose sum is σ = 79367040. Its totient is φ = 34388640.

The previous prime is 55498787. The next prime is 55498811. The reversal of 55498791 is 19789455.

It is not a de Polignac number, because 55498791 - 2² = 55498787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55498791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55498741) 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, 6165 + ... + 12206.

It is an arithmetic number, because the mean of its divisors is an integer number (4960440).

Almost surely, 2^55498791 is an apocalyptic number.

55498791 is a deficient number, since it is larger than the sum of its proper divisors (23868249).

55498791 is a wasteful number, since it uses less digits than its factorization.

55498791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18446.

The product of its digits is 453600, while the sum is 48.

The square root of 55498791 is about 7449.7510696667. The cubic root of 55498791 is about 381.4414115067.

The spelling of 55498791 in words is "fifty-five million, four hundred ninety-eight thousand, seven hundred ninety-one".