551297907 has 10 divisors (see below), whose sum is σ = 823543908. Its totient is φ = 367531884.

The previous prime is 551297897. The next prime is 551297933. The reversal of 551297907 is 709792155.

551297907 is a `hidden beast` number, since 551 + 2 + 9 + 7 + 90 + 7 = 666.

It is not a de Polignac number, because 551297907 - 2⁶ = 551297843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551297987) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3402993 + ... + 3403154.

Almost surely, 2^551297907 is an apocalyptic number.

551297907 is a deficient number, since it is larger than the sum of its proper divisors (272246001).

551297907 is an equidigital number, since it uses as much as digits as its factorization.

551297907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6806159 (or 6806150 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 551297907 is about 23479.7339635695. The cubic root of 551297907 is about 819.9652508574.

It can be divided in two parts, 55129 and 7907, that added together give a palindrome (63036).

The spelling of 551297907 in words is "five hundred fifty-one million, two hundred ninety-seven thousand, nine hundred seven".