101561094 has 64 divisors (see below), whose sum is σ = 240408000. Its totient is φ = 31670784.

The previous prime is 101561081. The next prime is 101561101. The reversal of 101561094 is 490165101.

101561094 is a `hidden beast` number, since 10 + 1 + 561 + 0 + 94 = 666.

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

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, 290832 + ... + 291180.

It is an arithmetic number, because the mean of its divisors is an integer number (3756375).

Almost surely, 2^101561094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101561094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120204000).

101561094 is an abundant number, since it is smaller than the sum of its proper divisors (138846906).

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

101561094 is a wasteful number, since it uses less digits than its factorization.

101561094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 101561094 is about 10077.7524279970. The cubic root of 101561094 is about 466.5617416032.

The spelling of 101561094 in words is "one hundred one million, five hundred sixty-one thousand, ninety-four".