51560645 has 8 divisors (see below), whose sum is σ = 63189504. Its totient is φ = 40370704.

The previous prime is 51560633. The next prime is 51560651. The reversal of 51560645 is 54606515.

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

It is a cyclic number.

It is not a de Polignac number, because 51560645 - 2⁴ = 51560629 is a prime.

It is a super-2 number, since 2×51560645² = 5317000225632050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109469 + ... + 109938.

It is an arithmetic number, because the mean of its divisors is an integer number (7898688).

Almost surely, 2^51560645 is an apocalyptic number.

It is an amenable number.

51560645 is a deficient number, since it is larger than the sum of its proper divisors (11628859).

51560645 is a wasteful number, since it uses less digits than its factorization.

51560645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219459.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 51560645 is about 7180.5741413901. The cubic root of 51560645 is about 372.1969247760.

It can be divided in two parts, 5 and 1560645, that multiplied together give a triangular number (7803225 = T₃₉₅₀).

The spelling of 51560645 in words is "fifty-one million, five hundred sixty thousand, six hundred forty-five".