51571672 has 8 divisors (see below), whose sum is σ = 96696900. Its totient is φ = 25785832.

The previous prime is 51571669. The next prime is 51571679. The reversal of 51571672 is 27617515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51571679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3223222 + ... + 3223237.

Almost surely, 2^51571672 is an apocalyptic number.

It is an amenable number.

51571672 is a deficient number, since it is larger than the sum of its proper divisors (45125228).

51571672 is a wasteful number, since it uses less digits than its factorization.

51571672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6446465 (or 6446461 counting only the distinct ones).

The product of its digits is 14700, while the sum is 34.

The square root of 51571672 is about 7181.3419358780. The cubic root of 51571672 is about 372.2234561414.

The spelling of 51571672 in words is "fifty-one million, five hundred seventy-one thousand, six hundred seventy-two".