51556345 has 16 divisors (see below), whose sum is σ = 64618560. Its totient is φ = 39438784.

The previous prime is 51556331. The next prime is 51556369. The reversal of 51556345 is 54365515.

It is a cyclic number.

It is not a de Polignac number, because 51556345 - 2⁵ = 51556313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51556345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13854 + ... + 17176.

It is an arithmetic number, because the mean of its divisors is an integer number (4038660).

Almost surely, 2^51556345 is an apocalyptic number.

It is an amenable number.

51556345 is a deficient number, since it is larger than the sum of its proper divisors (13062215).

51556345 is a wasteful number, since it uses less digits than its factorization.

51556345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464.

The product of its digits is 45000, while the sum is 34.

The square root of 51556345 is about 7180.2747161930. The cubic root of 51556345 is about 372.1865777935.

The spelling of 51556345 in words is "fifty-one million, five hundred fifty-six thousand, three hundred forty-five".