61850500 has 24 divisors (see below), whose sum is σ = 135082584. Its totient is φ = 24740000.

The previous prime is 61850497. The next prime is 61850501. The reversal of 61850500 is 505816.

It can be written as a sum of positive squares in 4 ways, for example, as 10355524 + 51494976 = 3218^2 + 7176^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (61850501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61351 + ... + 62350.

It is an arithmetic number, because the mean of its divisors is an integer number (5628441).

Almost surely, 2^61850500 is an apocalyptic number.

It is an amenable number.

61850500 is an abundant number, since it is smaller than the sum of its proper divisors (73232084).

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

61850500 is a wasteful number, since it uses less digits than its factorization.

61850500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123720 (or 123708 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 61850500 is about 7864.5088848573. The cubic root of 61850500 is about 395.4707840732.

The spelling of 61850500 in words is "sixty-one million, eight hundred fifty thousand, five hundred".