55207651 has 4 divisors (see below), whose sum is σ = 55222552. Its totient is φ = 55192752.

The previous prime is 55207639. The next prime is 55207681. The reversal of 55207651 is 15670255.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55207651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55207631) 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, 2911 + ... + 10903.

It is an arithmetic number, because the mean of its divisors is an integer number (13805638).

Almost surely, 2^55207651 is an apocalyptic number.

55207651 is a deficient number, since it is larger than the sum of its proper divisors (14901).

55207651 is an equidigital number, since it uses as much as digits as its factorization.

55207651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14900.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 55207651 is about 7430.1851255537. The cubic root of 55207651 is about 380.7732431349.

The spelling of 55207651 in words is "fifty-five million, two hundred seven thousand, six hundred fifty-one".