51274373 has 4 divisors (see below), whose sum is σ = 52241868. Its totient is φ = 50306880.

The previous prime is 51274253. The next prime is 51274381. The reversal of 51274373 is 37347215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12124324 + 39150049 = 3482^2 + 6257^2 .

It is a cyclic number.

It is not a de Polignac number, because 51274373 - 2¹² = 51270277 is a prime.

It is a super-2 number, since 2×51274373² = 5258122653086258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274393) 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 3 ways as a sum of consecutive naturals, for example, 483668 + ... + 483773.

It is an arithmetic number, because the mean of its divisors is an integer number (13060467).

Almost surely, 2^51274373 is an apocalyptic number.

51274373 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

51274373 is a deficient number, since it is larger than the sum of its proper divisors (967495).

51274373 is an equidigital number, since it uses as much as digits as its factorization.

51274373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967494.

The product of its digits is 17640, while the sum is 32.

The square root of 51274373 is about 7160.6126134570. The cubic root of 51274373 is about 371.5068159969.

The spelling of 51274373 in words is "fifty-one million, two hundred seventy-four thousand, three hundred seventy-three".