5254591440 has 120 divisors (see below), whose sum is σ = 18948742560. Its totient is φ = 1201046784.

The previous prime is 5254591411. The next prime is 5254591451. The reversal of 5254591440 is 441954525.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×5254591440² = 55221462402642547200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211650 + ... + 235169.

It is an arithmetic number, because the mean of its divisors is an integer number (157906188).

Almost surely, 2^5254591440 is an apocalyptic number.

It is an amenable number.

5254591440 is an abundant number, since it is smaller than the sum of its proper divisors (13694151120).

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

5254591440 is a wasteful number, since it uses less digits than its factorization.

5254591440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446849 (or 446836 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 5254591440 is about 72488.5607527146. The cubic root of 5254591440 is about 1738.5198404555.

It can be divided in two parts, 525 and 4591440, that added together give a triangular number (4591965 = T₃₀₃₀).

The spelling of 5254591440 in words is "five billion, two hundred fifty-four million, five hundred ninety-one thousand, four hundred forty".