61156134 has 80 divisors (see below), whose sum is σ = 150020640. Its totient is φ = 18506880.

The previous prime is 61156129. The next prime is 61156163. The reversal of 61156134 is 43165116.

61156134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 61156098 and 61156107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 149322 + ... + 149730.

It is an arithmetic number, because the mean of its divisors is an integer number (1875258).

Almost surely, 2^61156134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61156134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75010320).

61156134 is an abundant number, since it is smaller than the sum of its proper divisors (88864506).

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

61156134 is a wasteful number, since it uses less digits than its factorization.

61156134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 498 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 61156134 is about 7820.2387431587. The cubic root of 61156134 is about 393.9852906634.

The spelling of 61156134 in words is "sixty-one million, one hundred fifty-six thousand, one hundred thirty-four".