51373911 has 4 divisors (see below), whose sum is σ = 68498552. Its totient is φ = 34249272.

The previous prime is 51373897. The next prime is 51373919. The reversal of 51373911 is 11937315.

It is a happy number.

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

It is not a de Polignac number, because 51373911 - 2¹¹ = 51371863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51373919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8562316 + ... + 8562321.

It is an arithmetic number, because the mean of its divisors is an integer number (17124638).

Almost surely, 2^51373911 is an apocalyptic number.

51373911 is a deficient number, since it is larger than the sum of its proper divisors (17124641).

51373911 is a wasteful number, since it uses less digits than its factorization.

51373911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124640.

The product of its digits is 2835, while the sum is 30.

The square root of 51373911 is about 7167.5596265396. The cubic root of 51373911 is about 371.7470603929.

The spelling of 51373911 in words is "fifty-one million, three hundred seventy-three thousand, nine hundred eleven".