55607507251 has 4 divisors (see below), whose sum is σ = 56007561400. Its totient is φ = 55207453104.

The previous prime is 55607507239. The next prime is 55607507269. The reversal of 55607507251 is 15270570655.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 55607507251 - 2¹⁷ = 55607376179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55607507198 and 55607507207.

It is not an unprimeable number, because it can be changed into a prime (55607507231) 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, 200026866 + ... + 200027143.

It is an arithmetic number, because the mean of its divisors is an integer number (14001890350).

Almost surely, 2^55607507251 is an apocalyptic number.

55607507251 is a deficient number, since it is larger than the sum of its proper divisors (400054149).

55607507251 is a wasteful number, since it uses less digits than its factorization.

55607507251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400054148.

The product of its (nonzero) digits is 367500, while the sum is 43.

The spelling of 55607507251 in words is "fifty-five billion, six hundred seven million, five hundred seven thousand, two hundred fifty-one".