51656452 has 6 divisors (see below), whose sum is σ = 90398798. Its totient is φ = 25828224.

The previous prime is 51656417. The next prime is 51656471. The reversal of 51656452 is 25465615.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 3437316 = 6944^2 + 1854^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6457053 + ... + 6457060.

Almost surely, 2^51656452 is an apocalyptic number.

It is an amenable number.

51656452 is a deficient number, since it is larger than the sum of its proper divisors (38742346).

51656452 is a wasteful number, since it uses less digits than its factorization.

51656452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914117 (or 12914115 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 51656452 is about 7187.2423084240. The cubic root of 51656452 is about 372.4273137157.

The spelling of 51656452 in words is "fifty-one million, six hundred fifty-six thousand, four hundred fifty-two".