51374457 has 12 divisors (see below), whose sum is σ = 76766820. Its totient is φ = 33068448.

The previous prime is 51374419. The next prime is 51374473. The reversal of 51374457 is 75447315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23242041 + 28132416 = 4821^2 + 5304^2 .

It is not a de Polignac number, because 51374457 - 2⁷ = 51374329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51374957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98158 + ... + 98679.

It is an arithmetic number, because the mean of its divisors is an integer number (6397235).

Almost surely, 2^51374457 is an apocalyptic number.

It is an amenable number.

51374457 is a deficient number, since it is larger than the sum of its proper divisors (25392363).

51374457 is a wasteful number, since it uses less digits than its factorization.

51374457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196872 (or 196869 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 51374457 is about 7167.5977147159. The cubic root of 51374457 is about 371.7483773595.

The spelling of 51374457 in words is "fifty-one million, three hundred seventy-four thousand, four hundred fifty-seven".