551849265 has 96 divisors (see below), whose sum is σ = 1109721600. Its totient is φ = 251112960.

The previous prime is 551849261. The next prime is 551849269. The reversal of 551849265 is 562948155.

551849265 is a `hidden beast` number, since 551 + 8 + 4 + 92 + 6 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (551849261) and next prime (551849269).

It is not a de Polignac number, because 551849265 - 2² = 551849261 is a prime.

It is a super-2 number, since 2×551849265² = 609075222562080450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 551849265.

It is not an unprimeable number, because it can be changed into a prime (551849261) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 530616 + ... + 531654.

It is an arithmetic number, because the mean of its divisors is an integer number (11559600).

Almost surely, 2^551849265 is an apocalyptic number.

551849265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

551849265 is an abundant number, since it is smaller than the sum of its proper divisors (557872335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551849265 is a wasteful number, since it uses less digits than its factorization.

551849265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127 (or 1124 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 551849265 is about 23491.4721760898. The cubic root of 551849265 is about 820.2385113240.

The spelling of 551849265 in words is "five hundred fifty-one million, eight hundred forty-nine thousand, two hundred sixty-five".