61250557 has 8 divisors (see below), whose sum is σ = 61797152. Its totient is φ = 60706800.

The previous prime is 61250551. The next prime is 61250561. The reversal of 61250557 is 75505216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61250557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61250551) 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, 69403 + ... + 70279.

It is an arithmetic number, because the mean of its divisors is an integer number (7724644).

Almost surely, 2^61250557 is an apocalyptic number.

It is an amenable number.

61250557 is a deficient number, since it is larger than the sum of its proper divisors (546595).

61250557 is a wasteful number, since it uses less digits than its factorization.

61250557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 61250557 is about 7826.2735065930. The cubic root of 61250557 is about 394.1879530470.

The spelling of 61250557 in words is "sixty-one million, two hundred fifty thousand, five hundred fifty-seven".