487400581 has 4 divisors (see below), whose sum is σ = 490907200. Its totient is φ = 483893964.

The previous prime is 487400539. The next prime is 487400603. The reversal of 487400581 is 185004784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487400581 - 2⁷ = 487400453 is a prime.

It is a super-2 number, since 2×487400581² = 475118652718275122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 487400581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487400281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753101 + ... + 1753378.

It is an arithmetic number, because the mean of its divisors is an integer number (122726800).

Almost surely, 2^487400581 is an apocalyptic number.

It is an amenable number.

487400581 is a deficient number, since it is larger than the sum of its proper divisors (3506619).

487400581 is a wasteful number, since it uses less digits than its factorization.

487400581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3506618.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 487400581 is about 22077.1506540133. The cubic root of 487400581 is about 786.9769532895.

The spelling of 487400581 in words is "four hundred eighty-seven million, four hundred thousand, five hundred eighty-one".