51237619 has 2 divisors, whose sum is σ = 51237620. Its totient is φ = 51237618.

The previous prime is 51237611. The next prime is 51237671. The reversal of 51237619 is 91673215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51237619 - 2³ = 51237611 is a prime.

It is a super-2 number, since 2×51237619² = 5250587201578322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51237611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25618809 + 25618810.

It is an arithmetic number, because the mean of its divisors is an integer number (25618810).

Almost surely, 2^51237619 is an apocalyptic number.

51237619 is a deficient number, since it is larger than the sum of its proper divisors (1).

51237619 is an equidigital number, since it uses as much as digits as its factorization.

51237619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 34.

The square root of 51237619 is about 7158.0457528574. The cubic root of 51237619 is about 371.4180281383.

The spelling of 51237619 in words is "fifty-one million, two hundred thirty-seven thousand, six hundred nineteen".