55874491 has 4 divisors (see below), whose sum is σ = 56282472. Its totient is φ = 55466512.

The previous prime is 55874473. The next prime is 55874537. The reversal of 55874491 is 19447855.

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

It is a cyclic number.

It is not a de Polignac number, because 55874491 - 2¹⁷ = 55743419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55874411) 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, 203785 + ... + 204058.

It is an arithmetic number, because the mean of its divisors is an integer number (14070618).

Almost surely, 2^55874491 is an apocalyptic number.

55874491 is a deficient number, since it is larger than the sum of its proper divisors (407981).

55874491 is a wasteful number, since it uses less digits than its factorization.

55874491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407980.

The product of its digits is 201600, while the sum is 43.

The square root of 55874491 is about 7474.9241467723. The cubic root of 55874491 is about 382.3002012338.

It can be divided in two parts, 55874 and 491, that added together give a palindrome (56365).

The spelling of 55874491 in words is "fifty-five million, eight hundred seventy-four thousand, four hundred ninety-one".