61157008 has 40 divisors (see below), whose sum is σ = 132286176. Its totient is φ = 27148800.

The previous prime is 61156987. The next prime is 61157009. The reversal of 61157008 is 80075116.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61157009) 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, 3528 + ... + 11608.

Almost surely, 2^61157008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61157008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66143088).

61157008 is an abundant number, since it is smaller than the sum of its proper divisors (71129168).

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

61157008 is a wasteful number, since it uses less digits than its factorization.

61157008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143 (or 8137 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 61157008 is about 7820.2946236059. The cubic root of 61157008 is about 393.9871675070.

The spelling of 61157008 in words is "sixty-one million, one hundred fifty-seven thousand, eight".