51461157 has 16 divisors (see below), whose sum is σ = 76124160. Its totient is φ = 30658800.

The previous prime is 51461129. The next prime is 51461171. The reversal of 51461157 is 75116415.

It is not a de Polignac number, because 51461157 - 2⁶ = 51461093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51461197) by changing a digit.

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, 11269 + ... + 15162.

It is an arithmetic number, because the mean of its divisors is an integer number (4757760).

Almost surely, 2^51461157 is an apocalyptic number.

It is an amenable number.

51461157 is a deficient number, since it is larger than the sum of its proper divisors (24663003).

51461157 is a wasteful number, since it uses less digits than its factorization.

51461157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26504.

The product of its digits is 4200, while the sum is 30.

The square root of 51461157 is about 7173.6432166647. The cubic root of 51461157 is about 371.9573818097.

The spelling of 51461157 in words is "fifty-one million, four hundred sixty-one thousand, one hundred fifty-seven".