551091297 has 16 divisors (see below), whose sum is σ = 752457600. Its totient is φ = 358630272.

The previous prime is 551091287. The next prime is 551091313. The reversal of 551091297 is 792190155.

It is not a de Polignac number, because 551091297 - 2⁸ = 551091041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551091287) 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, 22933 + ... + 40349.

It is an arithmetic number, because the mean of its divisors is an integer number (47028600).

Almost surely, 2^551091297 is an apocalyptic number.

It is an amenable number.

551091297 is a deficient number, since it is larger than the sum of its proper divisors (201366303).

551091297 is a wasteful number, since it uses less digits than its factorization.

551091297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17672.

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 551091297 is about 23475.3337995437. Note that the first 3 decimals coincide. The cubic root of 551091297 is about 819.8628052248.

The spelling of 551091297 in words is "five hundred fifty-one million, ninety-one thousand, two hundred ninety-seven".