61650056 has 32 divisors (see below), whose sum is σ = 128784600. Its totient is φ = 27471360.

The previous prime is 61650049. The next prime is 61650067. The reversal of 61650056 is 65005616.

It can be written as a sum of positive squares in 4 ways, for example, as 52852900 + 8797156 = 7270^2 + 2966^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7205 + ... + 13236.

Almost surely, 2^61650056 is an apocalyptic number.

It is an amenable number.

61650056 is an abundant number, since it is smaller than the sum of its proper divisors (67134544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61650056 is a wasteful number, since it uses less digits than its factorization.

61650056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20489 (or 20485 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 61650056 is about 7851.7549630640. The cubic root of 61650056 is about 395.0431101802.

The spelling of 61650056 in words is "sixty-one million, six hundred fifty thousand, fifty-six".