51252645 has 16 divisors (see below), whose sum is σ = 82255680. Its totient is φ = 27250944.

The previous prime is 51252629. The next prime is 51252647. The reversal of 51252645 is 54625215.

It is not a de Polignac number, because 51252645 - 2⁴ = 51252629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51252647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15 + ... + 10124.

It is an arithmetic number, because the mean of its divisors is an integer number (5140980).

Almost surely, 2^51252645 is an apocalyptic number.

It is an amenable number.

51252645 is a deficient number, since it is larger than the sum of its proper divisors (31003035).

51252645 is a wasteful number, since it uses less digits than its factorization.

51252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10484.

The product of its digits is 12000, while the sum is 30.

The square root of 51252645 is about 7159.0952640679. The cubic root of 51252645 is about 371.4543320750.

The spelling of 51252645 in words is "fifty-one million, two hundred fifty-two thousand, six hundred forty-five".