551903340 has 48 divisors (see below), whose sum is σ = 1550257632. Its totient is φ = 146704896.

The previous prime is 551903309. The next prime is 551903347. The reversal of 551903340 is 43309155.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 551903298 and 551903307.

It is not an unprimeable number, because it can be changed into a prime (551903347) 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, 4512 + ... + 33528.

It is an arithmetic number, because the mean of its divisors is an integer number (32297034).

Almost surely, 2^551903340 is an apocalyptic number.

It is an amenable number.

551903340 is an abundant number, since it is smaller than the sum of its proper divisors (998354292).

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

551903340 is a wasteful number, since it uses less digits than its factorization.

551903340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29346 (or 29344 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 551903340 is about 23492.6230974747. The cubic root of 551903340 is about 820.2653018214.

The spelling of 551903340 in words is "five hundred fifty-one million, nine hundred three thousand, three hundred forty".