61566050 has 72 divisors (see below), whose sum is σ = 143529876. Its totient is φ = 19474560.

The previous prime is 61566047. The next prime is 61566059. The reversal of 61566050 is 5066516.

It can be written as a sum of positive squares in 6 ways, for example, as 16313521 + 45252529 = 4039^2 + 6727^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61566059) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 30884 + ... + 32816.

Almost surely, 2^61566050 is an apocalyptic number.

61566050 is an abundant number, since it is smaller than the sum of its proper divisors (81963826).

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

61566050 is a wasteful number, since it uses less digits than its factorization.

61566050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1960 counting only the distinct ones).

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

The square root of 61566050 is about 7846.4036347871. The cubic root of 61566050 is about 394.8635965487.

The spelling of 61566050 in words is "sixty-one million, five hundred sixty-six thousand, fifty".