51494579 has 4 divisors (see below), whose sum is σ = 54204840. Its totient is φ = 48784320.

The previous prime is 51494567. The next prime is 51494591. The reversal of 51494579 is 97549415.

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

It is an interprime number because it is at equal distance from previous prime (51494567) and next prime (51494591).

It is a cyclic number.

It is not a de Polignac number, because 51494579 - 2¹⁶ = 51429043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51494879) 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, 1355102 + ... + 1355139.

It is an arithmetic number, because the mean of its divisors is an integer number (13551210).

Almost surely, 2^51494579 is an apocalyptic number.

51494579 is a deficient number, since it is larger than the sum of its proper divisors (2710261).

51494579 is a wasteful number, since it uses less digits than its factorization.

51494579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710260.

The product of its digits is 226800, while the sum is 44.

The square root of 51494579 is about 7175.9723382967. The cubic root of 51494579 is about 372.0378882865.

The spelling of 51494579 in words is "fifty-one million, four hundred ninety-four thousand, five hundred seventy-nine".