61457058 has 96 divisors (see below), whose sum is σ = 157772160. Its totient is φ = 17107200.

The previous prime is 61457041. The next prime is 61457069. The reversal of 61457058 is 85075416.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101958 + ... + 102558.

It is an arithmetic number, because the mean of its divisors is an integer number (1643460).

Almost surely, 2^61457058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61457058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78886080).

61457058 is an abundant number, since it is smaller than the sum of its proper divisors (96315102).

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

61457058 is a wasteful number, since it uses less digits than its factorization.

61457058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 61457058 is about 7839.4552106636. The cubic root of 61457058 is about 394.6304464353.

It can be divided in two parts, 6145 and 7058, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 61457058 in words is "sixty-one million, four hundred fifty-seven thousand, fifty-eight".