61100156 has 12 divisors (see below), whose sum is σ = 115150392. Its totient is φ = 28200048.

The previous prime is 61100147. The next prime is 61100173. The reversal of 61100156 is 65100116.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587450 + ... + 587553.

It is an arithmetic number, because the mean of its divisors is an integer number (9595866).

Almost surely, 2^61100156 is an apocalyptic number.

It is an amenable number.

61100156 is a deficient number, since it is larger than the sum of its proper divisors (54050236).

61100156 is a wasteful number, since it uses less digits than its factorization.

61100156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175020 (or 1175018 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 61100156 is about 7816.6588770395. The cubic root of 61100156 is about 393.8650452106.

The spelling of 61100156 in words is "sixty-one million, one hundred thousand, one hundred fifty-six".