51116407 has 2 divisors, whose sum is σ = 51116408. Its totient is φ = 51116406.

The previous prime is 51116393. The next prime is 51116413. The reversal of 51116407 is 70461115.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51116407 - 2¹⁵ = 51083639 is a prime.

It is a super-2 number, since 2×51116407² = 5225774129179298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51116477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25558203 + 25558204.

It is an arithmetic number, because the mean of its divisors is an integer number (25558204).

Almost surely, 2^51116407 is an apocalyptic number.

51116407 is a deficient number, since it is larger than the sum of its proper divisors (1).

51116407 is an equidigital number, since it uses as much as digits as its factorization.

51116407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 51116407 is about 7149.5739033875. The cubic root of 51116407 is about 371.1249110177.

The spelling of 51116407 in words is "fifty-one million, one hundred sixteen thousand, four hundred seven".