51474231 has 8 divisors (see below), whose sum is σ = 76258160. Its totient is φ = 34316136.

The previous prime is 51474221. The next prime is 51474251. The reversal of 51474231 is 13247415.

It is not a de Polignac number, because 51474231 - 2⁷ = 51474103 is a prime.

It is a super-2 number, since 2×51474231² = 5299192914082722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1906453 = 51474231 / (5 + 1 + 4 + 7 + 4 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51474195 and 51474204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51474221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953200 + ... + 953253.

It is an arithmetic number, because the mean of its divisors is an integer number (9532270).

Almost surely, 2^51474231 is an apocalyptic number.

51474231 is a deficient number, since it is larger than the sum of its proper divisors (24783929).

51474231 is a wasteful number, since it uses less digits than its factorization.

51474231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906462 (or 1906456 counting only the distinct ones).

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

The square root of 51474231 is about 7174.5544112509. The cubic root of 51474231 is about 371.9888784396.

The spelling of 51474231 in words is "fifty-one million, four hundred seventy-four thousand, two hundred thirty-one".