551421351 has 20 divisors (see below), whose sum is σ = 887093592. Its totient is φ = 339335568.

The previous prime is 551421337. The next prime is 551421359. The reversal of 551421351 is 153124155.

It is not a de Polignac number, because 551421351 - 2⁵ = 551421319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551421359) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 260781 + ... + 262886.

Almost surely, 2^551421351 is an apocalyptic number.

551421351 is a deficient number, since it is larger than the sum of its proper divisors (335672241).

551421351 is a wasteful number, since it uses less digits than its factorization.

551421351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523692 (or 523683 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 551421351 is about 23482.3625514981. The cubic root of 551421351 is about 820.0264471938.

The spelling of 551421351 in words is "five hundred fifty-one million, four hundred twenty-one thousand, three hundred fifty-one".