51007245 has 32 divisors (see below), whose sum is σ = 86237184. Its totient is φ = 25704000.

The previous prime is 51007207. The next prime is 51007247. The reversal of 51007245 is 54270015.

It is not a de Polignac number, because 51007245 - 2¹⁵ = 50974477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51007247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18720 + ... + 21270.

It is an arithmetic number, because the mean of its divisors is an integer number (2694912).

Almost surely, 2^51007245 is an apocalyptic number.

It is an amenable number.

51007245 is a deficient number, since it is larger than the sum of its proper divisors (35229939).

51007245 is a wasteful number, since it uses less digits than its factorization.

51007245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51007245 is about 7141.9356619897. The cubic root of 51007245 is about 370.8605366008.

The spelling of 51007245 in words is "fifty-one million, seven thousand, two hundred forty-five".