561372722 has 4 divisors (see below), whose sum is σ = 842059086. Its totient is φ = 280686360.

The previous prime is 561372719. The next prime is 561372737. The reversal of 561372722 is 227273165.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 554555401 + 6817321 = 23549^2 + 2611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140343179 + ... + 140343182.

Almost surely, 2^561372722 is an apocalyptic number.

561372722 is a deficient number, since it is larger than the sum of its proper divisors (280686364).

561372722 is a wasteful number, since it uses less digits than its factorization.

561372722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280686363.

The product of its digits is 35280, while the sum is 35.

The square root of 561372722 is about 23693.3054257949. The cubic root of 561372722 is about 824.9300078974.

The spelling of 561372722 in words is "five hundred sixty-one million, three hundred seventy-two thousand, seven hundred twenty-two".