461270021 has 2 divisors, whose sum is σ = 461270022. Its totient is φ = 461270020.

The previous prime is 461269999. The next prime is 461270041. The reversal of 461270021 is 120072164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357739396 + 103530625 = 18914^2 + 10175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-461270021 is a prime.

It is a super-3 number, since 3×461270021³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461270041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230635010 + 230635011.

It is an arithmetic number, because the mean of its divisors is an integer number (230635011).

Almost surely, 2^461270021 is an apocalyptic number.

It is an amenable number.

461270021 is a deficient number, since it is larger than the sum of its proper divisors (1).

461270021 is an equidigital number, since it uses as much as digits as its factorization.

461270021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 461270021 is about 21477.1976989550. The cubic root of 461270021 is about 772.6540343510.

The spelling of 461270021 in words is "four hundred sixty-one million, two hundred seventy thousand, twenty-one".