61989250 has 16 divisors (see below), whose sum is σ = 116044344. Its totient is φ = 24795600.

The previous prime is 61989247. The next prime is 61989283. The reversal of 61989250 is 5298916.

It can be written as a sum of positive squares in 4 ways, for example, as 30371121 + 31618129 = 5511^2 + 5623^2 .

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, 123729 + ... + 124228.

Almost surely, 2^61989250 is an apocalyptic number.

61989250 is a deficient number, since it is larger than the sum of its proper divisors (54055094).

61989250 is a wasteful number, since it uses less digits than its factorization.

61989250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247974 (or 247964 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 61989250 is about 7873.3252187370. The cubic root of 61989250 is about 395.7662847347.

The spelling of 61989250 in words is "sixty-one million, nine hundred eighty-nine thousand, two hundred fifty".