51474379 has 4 divisors (see below), whose sum is σ = 56153880. Its totient is φ = 46794880.

The previous prime is 51474349. The next prime is 51474403. The reversal of 51474379 is 97347415.

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

It is not a de Polignac number, because 51474379 - 2⁷ = 51474251 is a prime.

It is a super-2 number, since 2×51474379² = 5299223386871282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51474349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339734 + ... + 2339755.

It is an arithmetic number, because the mean of its divisors is an integer number (14038470).

Almost surely, 2^51474379 is an apocalyptic number.

51474379 is a deficient number, since it is larger than the sum of its proper divisors (4679501).

51474379 is a wasteful number, since it uses less digits than its factorization.

51474379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679500.

The product of its digits is 105840, while the sum is 40.

The square root of 51474379 is about 7174.5647254729. The cubic root of 51474379 is about 371.9892349565.

The spelling of 51474379 in words is "fifty-one million, four hundred seventy-four thousand, three hundred seventy-nine".