551437340 has 48 divisors (see below), whose sum is σ = 1176602112. Its totient is φ = 217064256.

The previous prime is 551437321. The next prime is 551437343. The reversal of 551437340 is 43734155.

It is a junction number, because it is equal to n+sod(n) for n = 551437297 and 551437306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551437343) 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, 356609 + ... + 358151.

It is an arithmetic number, because the mean of its divisors is an integer number (24512544).

Almost surely, 2^551437340 is an apocalyptic number.

It is an amenable number.

551437340 is an abundant number, since it is smaller than the sum of its proper divisors (625164772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551437340 is a wasteful number, since it uses less digits than its factorization.

551437340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 551437340 is about 23482.7029960352. The cubic root of 551437340 is about 820.0343729395.

The spelling of 551437340 in words is "five hundred fifty-one million, four hundred thirty-seven thousand, three hundred forty".