561171004 has 12 divisors (see below), whose sum is σ = 1033736200. Its totient is φ = 265817808.

The previous prime is 561170989. The next prime is 561171019. The reversal of 561171004 is 400171165.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (561170989) and next prime (561171019).

It is a self number, because there is not a number n which added to its sum of digits gives 561171004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3691839 + ... + 3691990.

Almost surely, 2^561171004 is an apocalyptic number.

It is an amenable number.

561171004 is a deficient number, since it is larger than the sum of its proper divisors (472565196).

561171004 is a wasteful number, since it uses less digits than its factorization.

561171004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383852 (or 7383850 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 561171004 is about 23689.0481868732. The cubic root of 561171004 is about 824.8311887232.

It can be divided in two parts, 56117 and 1004, that added together give a square (57121 = 239²).

The spelling of 561171004 in words is "five hundred sixty-one million, one hundred seventy-one thousand, four".