55591653 has 8 divisors (see below), whose sum is σ = 79823968. Its totient is φ = 34210224.

The previous prime is 55591633. The next prime is 55591681. The reversal of 55591653 is 35619555.

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

It is not a de Polignac number, because 55591653 - 2²¹ = 53494501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1425427 = 55591653 / (5 + 5 + 5 + 9 + 1 + 6 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55591633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712675 + ... + 712752.

It is an arithmetic number, because the mean of its divisors is an integer number (9977996).

Almost surely, 2^55591653 is an apocalyptic number.

It is an amenable number.

55591653 is a deficient number, since it is larger than the sum of its proper divisors (24232315).

55591653 is a wasteful number, since it uses less digits than its factorization.

55591653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425443.

The product of its digits is 101250, while the sum is 39.

The square root of 55591653 is about 7455.9810219716. The cubic root of 55591653 is about 381.6540388094.

The spelling of 55591653 in words is "fifty-five million, five hundred ninety-one thousand, six hundred fifty-three".