551945427 has 16 divisors (see below), whose sum is σ = 804323712. Its totient is φ = 333889920.

The previous prime is 551945417. The next prime is 551945431. The reversal of 551945427 is 724549155.

It is not a de Polignac number, because 551945427 - 2⁴ = 551945411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551945417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2763 + ... + 33339.

It is an arithmetic number, because the mean of its divisors is an integer number (50270232).

Almost surely, 2^551945427 is an apocalyptic number.

551945427 is a deficient number, since it is larger than the sum of its proper divisors (252378285).

551945427 is a wasteful number, since it uses less digits than its factorization.

551945427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31138.

The product of its digits is 252000, while the sum is 42.

The square root of 551945427 is about 23493.5188296687. The cubic root of 551945427 is about 820.2861518663.

The spelling of 551945427 in words is "five hundred fifty-one million, nine hundred forty-five thousand, four hundred twenty-seven".