51407406 has 32 divisors (see below), whose sum is σ = 114498720. Its totient is φ = 17096832.

The previous prime is 51407383. The next prime is 51407417. The reversal of 51407406 is 60470415.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51407406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32326 + ... + 33878.

It is an arithmetic number, because the mean of its divisors is an integer number (3578085).

Almost surely, 2^51407406 is an apocalyptic number.

51407406 is an abundant number, since it is smaller than the sum of its proper divisors (63091314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51407406 is a wasteful number, since it uses less digits than its factorization.

51407406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 51407406 is about 7169.8958151426. The cubic root of 51407406 is about 371.8278339634.

The spelling of 51407406 in words is "fifty-one million, four hundred seven thousand, four hundred six".