551251252340 has 24 divisors (see below), whose sum is σ = 1157732265480. Its totient is φ = 220480570368.

The previous prime is 551251252313. The next prime is 551251252423. The reversal of 551251252340 is 43252152155.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46577409124 + 504673843216 = 215818^2 + 710404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551251252340.

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, 1017845 + ... + 1462364.

It is an arithmetic number, because the mean of its divisors is an integer number (48238844395).

Almost surely, 2^551251252340 is an apocalyptic number.

It is an amenable number.

551251252340 is an abundant number, since it is smaller than the sum of its proper divisors (606481013140).

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

551251252340 is a wasteful number, since it uses less digits than its factorization.

551251252340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491331 (or 2491329 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 551251252340 in words is "five hundred fifty-one billion, two hundred fifty-one million, two hundred fifty-two thousand, three hundred forty".