61156326 has 64 divisors (see below), whose sum is σ = 160542720. Its totient is φ = 15046560.

The previous prime is 61156283. The next prime is 61156339. The reversal of 61156326 is 62365116.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61156293 and 61156302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5295 + ... + 12261.

It is an arithmetic number, because the mean of its divisors is an integer number (2508480).

Almost surely, 2^61156326 is an apocalyptic number.

61156326 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 61156326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80271360).

61156326 is an abundant number, since it is smaller than the sum of its proper divisors (99386394).

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

61156326 is a wasteful number, since it uses less digits than its factorization.

61156326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7009.

The product of its digits is 6480, while the sum is 30.

The square root of 61156326 is about 7820.2510189891. The cubic root of 61156326 is about 393.9857029692.

It can be divided in two parts, 6 and 1156326, that multiplied together give a square (6937956 = 2634²).

The spelling of 61156326 in words is "sixty-one million, one hundred fifty-six thousand, three hundred twenty-six".