557426537250 has 128 divisors (see below), whose sum is σ = 1518314353920. Its totient is φ = 135089856000.

The previous prime is 557426537233. The next prime is 557426537263. The reversal of 557426537250 is 52735624755.

It is a junction number, because it is equal to n+sod(n) for n = 557426537193 and 557426537202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30590142 + ... + 30608358.

It is an arithmetic number, because the mean of its divisors is an integer number (11861830890).

Almost surely, 2^557426537250 is an apocalyptic number.

557426537250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 557426537250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (759157176960).

557426537250 is an abundant number, since it is smaller than the sum of its proper divisors (960887816670).

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

557426537250 is a wasteful number, since it uses less digits than its factorization.

557426537250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21957 (or 21947 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 51.

The spelling of 557426537250 in words is "five hundred fifty-seven billion, four hundred twenty-six million, five hundred thirty-seven thousand, two hundred fifty".