55989651 has 4 divisors (see below), whose sum is σ = 74652872. Its totient is φ = 37326432.

The previous prime is 55989623. The next prime is 55989671. The reversal of 55989651 is 15698955.

It is a happy number.

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

It is not a de Polignac number, because 55989651 - 2⁶ = 55989587 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55989651.

It is not an unprimeable number, because it can be changed into a prime (55989611) 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, 9331606 + ... + 9331611.

It is an arithmetic number, because the mean of its divisors is an integer number (18663218).

Almost surely, 2^55989651 is an apocalyptic number.

55989651 is a deficient number, since it is larger than the sum of its proper divisors (18663221).

55989651 is a wasteful number, since it uses less digits than its factorization.

55989651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18663220.

The product of its digits is 486000, while the sum is 48.

The square root of 55989651 is about 7482.6232699502. The cubic root of 55989651 is about 382.5626673349.

The spelling of 55989651 in words is "fifty-five million, nine hundred eighty-nine thousand, six hundred fifty-one".