51652619 has 2 divisors, whose sum is σ = 51652620. Its totient is φ = 51652618.

The previous prime is 51652609. The next prime is 51652637. The reversal of 51652619 is 91625615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51652619 - 2¹⁶ = 51587083 is a prime.

It is a super-2 number, since 2×51652619² = 5335986099118322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51652609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25826309 + 25826310.

It is an arithmetic number, because the mean of its divisors is an integer number (25826310).

Almost surely, 2^51652619 is an apocalyptic number.

51652619 is a deficient number, since it is larger than the sum of its proper divisors (1).

51652619 is an equidigital number, since it uses as much as digits as its factorization.

51652619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 51652619 is about 7186.9756504388. The cubic root of 51652619 is about 372.4181018997.

It can be divided in two parts, 516 and 52619, that added together give a palindrome (53135).

The spelling of 51652619 in words is "fifty-one million, six hundred fifty-two thousand, six hundred nineteen".