51012745 has 16 divisors (see below), whose sum is σ = 70132608. Its totient is φ = 34894080.

The previous prime is 51012697. The next prime is 51012761. The reversal of 51012745 is 54721015.

It is not a de Polignac number, because 51012745 - 2⁷ = 51012617 is a prime.

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, 14785 + ... + 17905.

It is an arithmetic number, because the mean of its divisors is an integer number (4383288).

Almost surely, 2^51012745 is an apocalyptic number.

It is an amenable number.

51012745 is a deficient number, since it is larger than the sum of its proper divisors (19119863).

51012745 is a wasteful number, since it uses less digits than its factorization.

51012745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3600.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 51012745 is about 7142.3207012847. The cubic root of 51012745 is about 370.8738658161.

The spelling of 51012745 in words is "fifty-one million, twelve thousand, seven hundred forty-five".