55663651 has 8 divisors (see below), whose sum is σ = 58386240. Its totient is φ = 53005248.

The previous prime is 55663639. The next prime is 55663681. The reversal of 55663651 is 15636655.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55663651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

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 55663651.

It is not an unprimeable number, because it can be changed into a prime (55663681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14266 + ... + 17743.

It is an arithmetic number, because the mean of its divisors is an integer number (7298280).

Almost surely, 2^55663651 is an apocalyptic number.

55663651 is a deficient number, since it is larger than the sum of its proper divisors (2722589).

55663651 is a wasteful number, since it uses less digits than its factorization.

55663651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32093.

The product of its digits is 81000, while the sum is 37.

The square root of 55663651 is about 7460.8076640535. The cubic root of 55663651 is about 381.8187306407.

The spelling of 55663651 in words is "fifty-five million, six hundred sixty-three thousand, six hundred fifty-one".