561421488 has 20 divisors (see below), whose sum is σ = 1450338968. Its totient is φ = 187140480.

The previous prime is 561421463. The next prime is 561421493. The reversal of 561421488 is 884124165.

It is a super-4 number, since 4×561421488⁴ (a number of 36 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 5848093 + ... + 5848188.

Almost surely, 2^561421488 is an apocalyptic number.

It is an amenable number.

561421488 is an abundant number, since it is smaller than the sum of its proper divisors (888917480).

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

561421488 is a wasteful number, since it uses less digits than its factorization.

561421488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11696292 (or 11696286 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 561421488 is about 23694.3345127058. The cubic root of 561421488 is about 824.9538942094.

It can be divided in two parts, 56142 and 1488, that added together give a triangular number (57630 = T₃₃₉).

The spelling of 561421488 in words is "five hundred sixty-one million, four hundred twenty-one thousand, four hundred eighty-eight".