55621498 has 8 divisors (see below), whose sum is σ = 87059808. Its totient is φ = 26601564.

The previous prime is 55621477. The next prime is 55621519. The reversal of 55621498 is 89412655.

It is an interprime number because it is at equal distance from previous prime (55621477) and next prime (55621519).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55621498.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604536 + ... + 604627.

It is an arithmetic number, because the mean of its divisors is an integer number (10882476).

Almost surely, 2^55621498 is an apocalyptic number.

55621498 is a deficient number, since it is larger than the sum of its proper divisors (31438310).

55621498 is a wasteful number, since it uses less digits than its factorization.

55621498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209188.

The product of its digits is 86400, while the sum is 40.

The square root of 55621498 is about 7457.9821667794. The cubic root of 55621498 is about 381.7223250023.

The spelling of 55621498 in words is "fifty-five million, six hundred twenty-one thousand, four hundred ninety-eight".