404512051 has 4 divisors (see below), whose sum is σ = 413919352. Its totient is φ = 395104752.

The previous prime is 404512021. The next prime is 404512067. The reversal of 404512051 is 150215404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404512051 - 2²⁵ = 370957619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404512001) 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, 4703586 + ... + 4703671.

It is an arithmetic number, because the mean of its divisors is an integer number (103479838).

Almost surely, 2^404512051 is an apocalyptic number.

404512051 is a deficient number, since it is larger than the sum of its proper divisors (9407301).

404512051 is an equidigital number, since it uses as much as digits as its factorization.

404512051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407300.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 404512051 is about 20112.4849533816. The cubic root of 404512051 is about 739.5663706142.

Adding to 404512051 its reverse (150215404), we get a palindrome (554727455).

The spelling of 404512051 in words is "four hundred four million, five hundred twelve thousand, fifty-one".