61250490 has 288 divisors, whose sum is σ = 211273920. Its totient is φ = 12192768.

The previous prime is 61250461. The next prime is 61250521. The reversal of 61250490 is 9405216.

61250490 is a `hidden beast` number, since 612 + 5 + 0 + 49 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1424409 + ... + 1424451.

It is an arithmetic number, because the mean of its divisors is an integer number (733590).

Almost surely, 2^61250490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61250490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105636960).

61250490 is an abundant number, since it is smaller than the sum of its proper divisors (150023430).

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

61250490 is a wasteful number, since it uses less digits than its factorization.

61250490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61250490 is about 7826.2692261383. The cubic root of 61250490 is about 394.1878093171.

The spelling of 61250490 in words is "sixty-one million, two hundred fifty thousand, four hundred ninety".