51400371 has 16 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 31055520.

The previous prime is 51400361. The next prime is 51400411. The reversal of 51400371 is 17300415.

It is not a de Polignac number, because 51400371 - 2¹⁴ = 51383987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51400361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9286 + ... + 13748.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^51400371 is an apocalyptic number.

51400371 is a deficient number, since it is larger than the sum of its proper divisors (23594829).

51400371 is a wasteful number, since it uses less digits than its factorization.

51400371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 51400371 is about 7169.4052054546. The cubic root of 51400371 is about 371.8108718929.

Adding to 51400371 its reverse (17300415), we get a palindrome (68700786).

The spelling of 51400371 in words is "fifty-one million, four hundred thousand, three hundred seventy-one".