61111092 has 96 divisors (see below), whose sum is σ = 173924352. Its totient is φ = 16321536.

The previous prime is 61111031. The next prime is 61111103. The reversal of 61111092 is 29011116.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 90468 + ... + 91140.

It is an arithmetic number, because the mean of its divisors is an integer number (1811712).

Almost surely, 2^61111092 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 61111092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86962176).

61111092 is an abundant number, since it is smaller than the sum of its proper divisors (112813260).

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

61111092 is a wasteful number, since it uses less digits than its factorization.

61111092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 61111092 is about 7817.3583773548. The cubic root of 61111092 is about 393.8885424293. Note that the first 3 decimals are identical.

The spelling of 61111092 in words is "sixty-one million, one hundred eleven thousand, ninety-two".