51392507 has 2 divisors, whose sum is σ = 51392508. Its totient is φ = 51392506.

The previous prime is 51392503. The next prime is 51392531. The reversal of 51392507 is 70529315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51392507 - 2² = 51392503 is a prime.

It is not a weakly prime, because it can be changed into another prime (51392503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25696253 + 25696254.

It is an arithmetic number, because the mean of its divisors is an integer number (25696254).

Almost surely, 2^51392507 is an apocalyptic number.

51392507 is a deficient number, since it is larger than the sum of its proper divisors (1).

51392507 is an equidigital number, since it uses as much as digits as its factorization.

51392507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 51392507 is about 7168.8567428845. The cubic root of 51392507 is about 371.7919091904.

The spelling of 51392507 in words is "fifty-one million, three hundred ninety-two thousand, five hundred seven".