51656548 has 6 divisors (see below), whose sum is σ = 90398966. Its totient is φ = 25828272.

The previous prime is 51656543. The next prime is 51656593. The reversal of 51656548 is 84565615.

It can be written as a sum of positive squares in only one way, i.e., 30935844 + 20720704 = 5562^2 + 4552^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51656548.

It is not an unprimeable number, because it can be changed into a prime (51656543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6457065 + ... + 6457072.

Almost surely, 2^51656548 is an apocalyptic number.

It is an amenable number.

51656548 is a deficient number, since it is larger than the sum of its proper divisors (38742418).

51656548 is a wasteful number, since it uses less digits than its factorization.

51656548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914141 (or 12914139 counting only the distinct ones).

The product of its digits is 144000, while the sum is 40.

The square root of 51656548 is about 7187.2489869212. The cubic root of 51656548 is about 372.4275444258.

The spelling of 51656548 in words is "fifty-one million, six hundred fifty-six thousand, five hundred forty-eight".