61155836 has 24 divisors (see below), whose sum is σ = 124916736. Its totient is φ = 25651440.

The previous prime is 61155833. The next prime is 61155869. The reversal of 61155836 is 63855116.

It is a junction number, because it is equal to n+sod(n) for n = 61155796 and 61155805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61155833) 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, 21920 + ... + 24551.

It is an arithmetic number, because the mean of its divisors is an integer number (5204864).

Almost surely, 2^61155836 is an apocalyptic number.

It is an amenable number.

61155836 is an abundant number, since it is smaller than the sum of its proper divisors (63760900).

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

61155836 is a wasteful number, since it uses less digits than its factorization.

61155836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46529 (or 46527 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 61155836 is about 7820.2196900087. The cubic root of 61155836 is about 393.9846507286.

The spelling of 61155836 in words is "sixty-one million, one hundred fifty-five thousand, eight hundred thirty-six".