427422551 has 4 divisors (see below), whose sum is σ = 452565072. Its totient is φ = 402280032.

The previous prime is 427422533. The next prime is 427422553. The reversal of 427422551 is 155224724.

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 427422551 - 2⁶ = 427422487 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 (427422553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12571235 + ... + 12571268.

It is an arithmetic number, because the mean of its divisors is an integer number (113141268).

Almost surely, 2^427422551 is an apocalyptic number.

427422551 is a deficient number, since it is larger than the sum of its proper divisors (25142521).

427422551 is a wasteful number, since it uses less digits than its factorization.

427422551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25142520.

The product of its digits is 22400, while the sum is 32.

The square root of 427422551 is about 20674.2001296302. The cubic root of 427422551 is about 753.2731323226.

The spelling of 427422551 in words is "four hundred twenty-seven million, four hundred twenty-two thousand, five hundred fifty-one".