61491192 has 32 divisors (see below), whose sum is σ = 175689600. Its totient is φ = 17568864.

The previous prime is 61491119. The next prime is 61491203. The reversal of 61491192 is 29119416.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182842 + ... + 183177.

It is an arithmetic number, because the mean of its divisors is an integer number (5490300).

Almost surely, 2^61491192 is an apocalyptic number.

It is an amenable number.

61491192 is an abundant number, since it is smaller than the sum of its proper divisors (114198408).

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

61491192 is a wasteful number, since it uses less digits than its factorization.

61491192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366035 (or 366031 counting only the distinct ones).

The product of its digits is 3888, while the sum is 33.

The square root of 61491192 is about 7841.6319730015. The cubic root of 61491192 is about 394.7034937685.

It can be divided in two parts, 614 and 91192, that added together give a triangular number (91806 = T₄₂₈).

The spelling of 61491192 in words is "sixty-one million, four hundred ninety-one thousand, one hundred ninety-two".