49458584561 has 4 divisors (see below), whose sum is σ = 50136099492. Its totient is φ = 48781069632.

The previous prime is 49458584509. The next prime is 49458584597. The reversal of 49458584561 is 16548585494.

49458584561 = 157255² + 157256².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24729135025 + 24729449536 = 157255^2 + 157256^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49458584561 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49458584561.

It is not an unprimeable number, because it can be changed into a prime (49458584501) 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, 338757356 + ... + 338757501.

It is an arithmetic number, because the mean of its divisors is an integer number (12534024873).

Almost surely, 2^49458584561 is an apocalyptic number.

49458584561 is the 157256-th centered square number.

It is an amenable number.

49458584561 is a deficient number, since it is larger than the sum of its proper divisors (677514931).

49458584561 is an equidigital number, since it uses as much as digits as its factorization.

49458584561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677514930.

The product of its digits is 27648000, while the sum is 59.

The spelling of 49458584561 in words is "forty-nine billion, four hundred fifty-eight million, five hundred eighty-four thousand, five hundred sixty-one".