461561247 has 56 divisors (see below), whose sum is σ = 797452800. Its totient is φ = 261565200.

The previous prime is 461561239. The next prime is 461561249. The reversal of 461561247 is 742165164.

It is not a de Polignac number, because 461561247 - 2³ = 461561239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461561249) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 770254 + ... + 770852.

Almost surely, 2^461561247 is an apocalyptic number.

461561247 is a deficient number, since it is larger than the sum of its proper divisors (335891553).

461561247 is an equidigital number, since it uses as much as digits as its factorization.

461561247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 760 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 461561247 is about 21483.9765173955. The cubic root of 461561247 is about 772.8166069548.

The spelling of 461561247 in words is "four hundred sixty-one million, five hundred sixty-one thousand, two hundred forty-seven".