461221237 has 4 divisors (see below), whose sum is σ = 488351916. Its totient is φ = 434090560.

The previous prime is 461221217. The next prime is 461221273. The reversal of 461221237 is 732122164.

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 325405521 + 135815716 = 18039^2 + 11654^2 .

It is a cyclic number.

It is not a de Polignac number, because 461221237 - 2⁷ = 461221109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461221207) 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, 13565314 + ... + 13565347.

It is an arithmetic number, because the mean of its divisors is an integer number (122087979).

Almost surely, 2^461221237 is an apocalyptic number.

It is an amenable number.

461221237 is a deficient number, since it is larger than the sum of its proper divisors (27130679).

461221237 is a wasteful number, since it uses less digits than its factorization.

461221237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130678.

The product of its digits is 4032, while the sum is 28.

The square root of 461221237 is about 21476.0619527883. The cubic root of 461221237 is about 772.6267947143.

The spelling of 461221237 in words is "four hundred sixty-one million, two hundred twenty-one thousand, two hundred thirty-seven".