581275040 has 48 divisors (see below), whose sum is σ = 1406772360. Its totient is φ = 226836480.

The previous prime is 581275003. The next prime is 581275061. The reversal of 581275040 is 40572185.

It can be written as a sum of positive squares in 4 ways, for example, as 484528144 + 96746896 = 22012^2 + 9836^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 581274988 and 581275006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37745 + ... + 50864.

Almost surely, 2^581275040 is an apocalyptic number.

It is an amenable number.

581275040 is an abundant number, since it is smaller than the sum of its proper divisors (825497320).

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

581275040 is a wasteful number, since it uses less digits than its factorization.

581275040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88665 (or 88657 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 581275040 is about 24109.6462022984. The cubic root of 581275040 is about 834.5657512324.

The spelling of 581275040 in words is "five hundred eighty-one million, two hundred seventy-five thousand, forty".