581161070 has 48 divisors (see below), whose sum is σ = 1229033088. Its totient is φ = 197265600.

The previous prime is 581161069. The next prime is 581161081. The reversal of 581161070 is 70161185.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43619 + ... + 55361.

It is an arithmetic number, because the mean of its divisors is an integer number (25604856).

Almost surely, 2^581161070 is an apocalyptic number.

581161070 is an abundant number, since it is smaller than the sum of its proper divisors (647872018).

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

581161070 is a wasteful number, since it uses less digits than its factorization.

581161070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11865 (or 11858 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 581161070 is about 24107.2825096484. The cubic root of 581161070 is about 834.5112035174.

The spelling of 581161070 in words is "five hundred eighty-one million, one hundred sixty-one thousand, seventy".