61157196 has 36 divisors (see below), whose sum is σ = 154844872. Its totient is φ = 20352384.

The previous prime is 61157191. The next prime is 61157221. The reversal of 61157196 is 69175116.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61157196.

It is not an unprimeable number, because it can be changed into a prime (61157191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31716 + ... + 33588.

Almost surely, 2^61157196 is an apocalyptic number.

It is an amenable number.

61157196 is an abundant number, since it is smaller than the sum of its proper divisors (93687676).

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

61157196 is a wasteful number, since it uses less digits than its factorization.

61157196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790 (or 2785 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 61157196 is about 7820.3066436042. The cubic root of 61157196 is about 393.9875712193.

The spelling of 61157196 in words is "sixty-one million, one hundred fifty-seven thousand, one hundred ninety-six".