561166151 has 16 divisors (see below), whose sum is σ = 699417600. Its totient is φ = 438373728.

The previous prime is 561166147. The next prime is 561166163. The reversal of 561166151 is 151661165.

It is not a de Polignac number, because 561166151 - 2² = 561166147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561166751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31841 + ... + 46218.

It is an arithmetic number, because the mean of its divisors is an integer number (43713600).

Almost surely, 2^561166151 is an apocalyptic number.

561166151 is a deficient number, since it is larger than the sum of its proper divisors (138251449).

561166151 is a wasteful number, since it uses less digits than its factorization.

561166151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78158.

The product of its digits is 5400, while the sum is 32.

The square root of 561166151 is about 23688.9457553518. The cubic root of 561166151 is about 824.8288110063.

The spelling of 561166151 in words is "five hundred sixty-one million, one hundred sixty-six thousand, one hundred fifty-one".