5255211540 has 48 divisors (see below), whose sum is σ = 14747882688. Its totient is φ = 1398219264.

The previous prime is 5255211523. The next prime is 5255211541. The reversal of 5255211540 is 451125525.

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 = 5255211498 and 5255211507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5255211541) 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, 72277 + ... + 125436.

It is an arithmetic number, because the mean of its divisors is an integer number (307247556).

Almost surely, 2^5255211540 is an apocalyptic number.

It is an amenable number.

5255211540 is an abundant number, since it is smaller than the sum of its proper divisors (9492671148).

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

5255211540 is a wasteful number, since it uses less digits than its factorization.

5255211540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198168 (or 198166 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 5255211540 is about 72492.8378531286. The cubic root of 5255211540 is about 1738.5882259657.

The spelling of 5255211540 in words is "five billion, two hundred fifty-five million, two hundred eleven thousand, five hundred forty".