451620461 has 2 divisors, whose sum is σ = 451620462. Its totient is φ = 451620460.

The previous prime is 451620439. The next prime is 451620467. The reversal of 451620461 is 164026154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392238025 + 59382436 = 19805^2 + 7706^2 .

It is a cyclic number.

It is not a de Polignac number, because 451620461 - 2¹⁴ = 451604077 is a prime.

It is a super-2 number, since 2×451620461² = 407922081587705042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451620467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225810230 + 225810231.

It is an arithmetic number, because the mean of its divisors is an integer number (225810231).

Almost surely, 2^451620461 is an apocalyptic number.

It is an amenable number.

451620461 is a deficient number, since it is larger than the sum of its proper divisors (1).

451620461 is an equidigital number, since it uses as much as digits as its factorization.

451620461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 451620461 is about 21251.3637444753. The cubic root of 451620461 is about 767.2281634828.

The spelling of 451620461 in words is "four hundred fifty-one million, six hundred twenty thousand, four hundred sixty-one".