551691098 has 24 divisors (see below), whose sum is σ = 980817012. Its totient is φ = 231975744.

The previous prime is 551691071. The next prime is 551691103. The reversal of 551691098 is 890196155.

It can be written as a sum of positive squares in 2 ways, for example, as 546951769 + 4739329 = 23387^2 + 2177^2 .

It is a super-2 number, since 2×551691098² = 608726135224891208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47915 + ... + 58302.

Almost surely, 2^551691098 is an apocalyptic number.

551691098 is a deficient number, since it is larger than the sum of its proper divisors (429125914).

551691098 is a wasteful number, since it uses less digits than its factorization.

551691098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106286 (or 106279 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 551691098 is about 23488.1054578695. The cubic root of 551691098 is about 820.1601402486.

The spelling of 551691098 in words is "five hundred fifty-one million, six hundred ninety-one thousand, ninety-eight".