51775972 has 12 divisors (see below), whose sum is σ = 91164976. Its totient is φ = 25728840.

The previous prime is 51775963. The next prime is 51775973. The reversal of 51775972 is 27957715.

It is not an unprimeable number, because it can be changed into a prime (51775973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39054 + ... + 40357.

Almost surely, 2^51775972 is an apocalyptic number.

It is an amenable number.

51775972 is a deficient number, since it is larger than the sum of its proper divisors (39389004).

51775972 is a wasteful number, since it uses less digits than its factorization.

51775972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79578 (or 79576 counting only the distinct ones).

The product of its digits is 154350, while the sum is 43.

The square root of 51775972 is about 7195.5522373199. The cubic root of 51775972 is about 372.7143267582.

The spelling of 51775972 in words is "fifty-one million, seven hundred seventy-five thousand, nine hundred seventy-two".