61149492 has 72 divisors (see below), whose sum is σ = 163459296. Its totient is φ = 19981728.

The previous prime is 61149469. The next prime is 61149509. The reversal of 61149492 is 29494116.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50923 + ... + 52109.

It is an arithmetic number, because the mean of its divisors is an integer number (2270268).

Almost surely, 2^61149492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61149492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81729648).

61149492 is an abundant number, since it is smaller than the sum of its proper divisors (102309804).

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

61149492 is a wasteful number, since it uses less digits than its factorization.

61149492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1245 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 61149492 is about 7819.8140642857. The cubic root of 61149492 is about 393.9710269263.

The spelling of 61149492 in words is "sixty-one million, one hundred forty-nine thousand, four hundred ninety-two".