486621257 has 4 divisors (see below), whose sum is σ = 486679236. Its totient is φ = 486563280.

The previous prime is 486621253. The next prime is 486621259. The reversal of 486621257 is 752126684.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 261501241 + 225120016 = 16171^2 + 15004^2 .

It is a cyclic number.

It is not a de Polignac number, because 486621257 - 2² = 486621253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (486621253) 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, 13718 + ... + 34079.

It is an arithmetic number, because the mean of its divisors is an integer number (121669809).

Almost surely, 2^486621257 is an apocalyptic number.

It is an amenable number.

486621257 is a deficient number, since it is larger than the sum of its proper divisors (57979).

486621257 is a wasteful number, since it uses less digits than its factorization.

486621257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57978.

The product of its digits is 161280, while the sum is 41.

The square root of 486621257 is about 22059.4935798626. The cubic root of 486621257 is about 786.5572867130.

The spelling of 486621257 in words is "four hundred eighty-six million, six hundred twenty-one thousand, two hundred fifty-seven".