551691334 has 16 divisors (see below), whose sum is σ = 872362800. Its totient is φ = 260946144.

The previous prime is 551691319. The next prime is 551691373. The reversal of 551691334 is 433196155.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 551691293 and 551691302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16704 + ... + 37180.

It is an arithmetic number, because the mean of its divisors is an integer number (54522675).

Almost surely, 2^551691334 is an apocalyptic number.

551691334 is a deficient number, since it is larger than the sum of its proper divisors (320671466).

551691334 is a wasteful number, since it uses less digits than its factorization.

551691334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21207.

The product of its digits is 48600, while the sum is 37.

The square root of 551691334 is about 23488.1104816884. The cubic root of 551691334 is about 820.1602571967.

The spelling of 551691334 in words is "five hundred fifty-one million, six hundred ninety-one thousand, three hundred thirty-four".