551256998 has 12 divisors (see below), whose sum is σ = 856384620. Its totient is φ = 266123256.

The previous prime is 551256991. The next prime is 551257037. The reversal of 551256998 is 899652155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551256991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162188 + ... + 165551.

It is an arithmetic number, because the mean of its divisors is an integer number (71365385).

Almost surely, 2^551256998 is an apocalyptic number.

551256998 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

551256998 is a deficient number, since it is larger than the sum of its proper divisors (305127622).

551256998 is a wasteful number, since it uses less digits than its factorization.

551256998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327799 (or 327770 counting only the distinct ones).

The product of its digits is 972000, while the sum is 50.

The square root of 551256998 is about 23478.8627918816. The cubic root of 551256998 is about 819.9449685456.

The spelling of 551256998 in words is "five hundred fifty-one million, two hundred fifty-six thousand, nine hundred ninety-eight".