51157406 has 16 divisors (see below), whose sum is σ = 78730080. Its totient is φ = 24922080.

The previous prime is 51157399. The next prime is 51157411. The reversal of 51157406 is 60475115.

51157406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11375 + ... + 15221.

It is an arithmetic number, because the mean of its divisors is an integer number (4920630).

Almost surely, 2^51157406 is an apocalyptic number.

51157406 is a deficient number, since it is larger than the sum of its proper divisors (27572674).

51157406 is a wasteful number, since it uses less digits than its factorization.

51157406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4019.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 51157406 is about 7152.4405624933. The cubic root of 51157406 is about 371.2241073743.

It can be divided in two parts, 5115 and 7406, that added together give a palindrome (12521).

The spelling of 51157406 in words is "fifty-one million, one hundred fifty-seven thousand, four hundred six".