551266375 has 32 divisors (see below), whose sum is σ = 752903424. Its totient is φ = 399652000.

The previous prime is 551266363. The next prime is 551266379. The reversal of 551266375 is 573662155.

It is not a de Polignac number, because 551266375 - 2¹⁵ = 551233607 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 (551266379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 806784 + ... + 807466.

It is an arithmetic number, because the mean of its divisors is an integer number (23528232).

Almost surely, 2^551266375 is an apocalyptic number.

551266375 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

551266375 is a deficient number, since it is larger than the sum of its proper divisors (201637049).

551266375 is a wasteful number, since it uses less digits than its factorization.

551266375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1286 counting only the distinct ones).

The product of its digits is 189000, while the sum is 40.

The square root of 551266375 is about 23479.0624812832. The cubic root of 551266375 is about 819.9496176659.

The spelling of 551266375 in words is "five hundred fifty-one million, two hundred sixty-six thousand, three hundred seventy-five".