551342540 has 48 divisors (see below), whose sum is σ = 1338120000. Its totient is φ = 186903552.

The previous prime is 551342509. The next prime is 551342543. The reversal of 551342540 is 45243155.

It is not an unprimeable number, because it can be changed into a prime (551342543) 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, 9665 + ... + 34584.

It is an arithmetic number, because the mean of its divisors is an integer number (27877500).

Almost surely, 2^551342540 is an apocalyptic number.

It is an amenable number.

551342540 is an abundant number, since it is smaller than the sum of its proper divisors (786777460).

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

551342540 is a wasteful number, since it uses less digits than its factorization.

551342540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44354 (or 44352 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 551342540 is about 23480.6844022912. The cubic root of 551342540 is about 819.9873783502.

Adding to 551342540 its reverse (45243155), we get a palindrome (596585695).

The spelling of 551342540 in words is "five hundred fifty-one million, three hundred forty-two thousand, five hundred forty".