451599961 has 4 divisors (see below), whose sum is σ = 475368400. Its totient is φ = 427831524.

The previous prime is 451599943. The next prime is 451599979. The reversal of 451599961 is 169995154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (451599943) and next prime (451599979).

It is a cyclic number.

It is not a de Polignac number, because 451599961 - 2¹³ = 451591769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451599991) 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, 11884191 + ... + 11884228.

It is an arithmetic number, because the mean of its divisors is an integer number (118842100).

Almost surely, 2^451599961 is an apocalyptic number.

It is an amenable number.

451599961 is a deficient number, since it is larger than the sum of its proper divisors (23768439).

451599961 is a wasteful number, since it uses less digits than its factorization.

451599961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23768438.

The product of its digits is 437400, while the sum is 49.

The square root of 451599961 is about 21250.8814170142. The cubic root of 451599961 is about 767.2165546086.

The spelling of 451599961 in words is "four hundred fifty-one million, five hundred ninety-nine thousand, nine hundred sixty-one".