51479571 has 24 divisors (see below), whose sum is σ = 81257680. Its totient is φ = 28797120.

The previous prime is 51479563. The next prime is 51479591. The reversal of 51479571 is 17597415.

It is not a de Polignac number, because 51479571 - 2³ = 51479563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51479521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 736 + ... + 10173.

Almost surely, 2^51479571 is an apocalyptic number.

51479571 is a deficient number, since it is larger than the sum of its proper divisors (29778109).

51479571 is a wasteful number, since it uses less digits than its factorization.

51479571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10947 (or 10936 counting only the distinct ones).

The product of its digits is 44100, while the sum is 39.

The square root of 51479571 is about 7174.9265501467. The cubic root of 51479571 is about 372.0017415227.

The spelling of 51479571 in words is "fifty-one million, four hundred seventy-nine thousand, five hundred seventy-one".