561415120 has 40 divisors (see below), whose sum is σ = 1491761664. Its totient is φ = 192484992.

The previous prime is 561415111. The next prime is 561415133. The reversal of 561415120 is 21514165.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×561415120² = 630373873929228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500704 + ... + 501823.

Almost surely, 2^561415120 is an apocalyptic number.

It is an amenable number.

561415120 is an abundant number, since it is smaller than the sum of its proper divisors (930346544).

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

561415120 is a wasteful number, since it uses less digits than its factorization.

561415120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002547 (or 1002541 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 561415120 is about 23694.2001342101. The cubic root of 561415120 is about 824.9507751469.

Adding to 561415120 its reverse (21514165), we get a palindrome (582929285).

The spelling of 561415120 in words is "five hundred sixty-one million, four hundred fifteen thousand, one hundred twenty".