51245507 has 2 divisors, whose sum is σ = 51245508. Its totient is φ = 51245506.

The previous prime is 51245501. The next prime is 51245521. The reversal of 51245507 is 70554215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51245507 - 2⁶ = 51245443 is a prime.

It is a super-2 number, since 2×51245507² = 5252203975374098, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51245507.

It is not a weakly prime, because it can be changed into another prime (51245501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25622753 + 25622754.

It is an arithmetic number, because the mean of its divisors is an integer number (25622754).

Almost surely, 2^51245507 is an apocalyptic number.

51245507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51245507 is an equidigital number, since it uses as much as digits as its factorization.

51245507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 51245507 is about 7158.5967200283. The cubic root of 51245507 is about 371.4370870195.

The spelling of 51245507 in words is "fifty-one million, two hundred forty-five thousand, five hundred seven".