431252551 has 4 divisors (see below), whose sum is σ = 432176472. Its totient is φ = 430328632.

The previous prime is 431252539. The next prime is 431252567. The reversal of 431252551 is 155252134.

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 431252551 - 2²¹ = 429155399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431252851) 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, 461260 + ... + 462193.

It is an arithmetic number, because the mean of its divisors is an integer number (108044118).

Almost surely, 2^431252551 is an apocalyptic number.

431252551 is a deficient number, since it is larger than the sum of its proper divisors (923921).

431252551 is an equidigital number, since it uses as much as digits as its factorization.

431252551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923920.

The product of its digits is 6000, while the sum is 28.

The square root of 431252551 is about 20766.6210780666. The cubic root of 431252551 is about 755.5163936505.

The spelling of 431252551 in words is "four hundred thirty-one million, two hundred fifty-two thousand, five hundred fifty-one".