422551551 has 4 divisors (see below), whose sum is σ = 563402072. Its totient is φ = 281701032.

The previous prime is 422551543. The next prime is 422551567. The reversal of 422551551 is 155155224.

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

It is not a de Polignac number, because 422551551 - 2³ = 422551543 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 (422551511) 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, 70425256 + ... + 70425261.

It is an arithmetic number, because the mean of its divisors is an integer number (140850518).

Almost surely, 2^422551551 is an apocalyptic number.

422551551 is a deficient number, since it is larger than the sum of its proper divisors (140850521).

422551551 is a wasteful number, since it uses less digits than its factorization.

422551551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140850520.

The product of its digits is 10000, while the sum is 30.

The square root of 422551551 is about 20556.0587418892. The cubic root of 422551551 is about 750.4007049870.

The spelling of 422551551 in words is "four hundred twenty-two million, five hundred fifty-one thousand, five hundred fifty-one".