461630251 has 8 divisors (see below), whose sum is σ = 488839680. Its totient is φ = 434712168.

The previous prime is 461630243. The next prime is 461630261. The reversal of 461630251 is 152036164.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 461630251 - 2³ = 461630243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461630261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69571 + ... + 75916.

It is an arithmetic number, because the mean of its divisors is an integer number (61104960).

Almost surely, 2^461630251 is an apocalyptic number.

461630251 is a deficient number, since it is larger than the sum of its proper divisors (27209429).

461630251 is a wasteful number, since it uses less digits than its factorization.

461630251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145673.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 461630251 is about 21485.5823984364. The cubic root of 461630251 is about 772.8551173946.

The spelling of 461630251 in words is "four hundred sixty-one million, six hundred thirty thousand, two hundred fifty-one".