51583967 has 4 divisors (see below), whose sum is σ = 54618336. Its totient is φ = 48549600.

The previous prime is 51583927. The next prime is 51583981. The reversal of 51583967 is 76938515.

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

It is a cyclic number.

It is not a de Polignac number, because 51583967 - 2⁸ = 51583711 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 (51583927) 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, 1517159 + ... + 1517192.

It is an arithmetic number, because the mean of its divisors is an integer number (13654584).

Almost surely, 2^51583967 is an apocalyptic number.

51583967 is a deficient number, since it is larger than the sum of its proper divisors (3034369).

51583967 is a wasteful number, since it uses less digits than its factorization.

51583967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034368.

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

The square root of 51583967 is about 7182.1979226418. The cubic root of 51583967 is about 372.2530339023.

The spelling of 51583967 in words is "fifty-one million, five hundred eighty-three thousand, nine hundred sixty-seven".