551422442 has 4 divisors (see below), whose sum is σ = 827133666. Its totient is φ = 275711220.

The previous prime is 551422439. The next prime is 551422457. The reversal of 551422442 is 244224155.

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

It can be written as a sum of positive squares in only one way, i.e., 542843401 + 8579041 = 23299^2 + 2929^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137855609 + ... + 137855612.

Almost surely, 2^551422442 is an apocalyptic number.

551422442 is a deficient number, since it is larger than the sum of its proper divisors (275711224).

551422442 is a wasteful number, since it uses less digits than its factorization.

551422442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275711223.

The product of its digits is 12800, while the sum is 29.

The square root of 551422442 is about 23482.3857816875. The cubic root of 551422442 is about 820.0269880073.

Adding to 551422442 its reverse (244224155), we get a palindrome (795646597).

The spelling of 551422442 in words is "five hundred fifty-one million, four hundred twenty-two thousand, four hundred forty-two".