7522257140 has 24 divisors (see below), whose sum is σ = 16094793960. Its totient is φ = 2952130688.

The previous prime is 7522257109. The next prime is 7522257143. The reversal of 7522257140 is 417522257.

It can be written as a sum of positive squares in 4 ways, for example, as 3890266384 + 3631990756 = 62372^2 + 60266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7522257140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7522257143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3547175 + ... + 3549294.

It is an arithmetic number, because the mean of its divisors is an integer number (670616415).

Almost surely, 2^7522257140 is an apocalyptic number.

It is an amenable number.

7522257140 is an abundant number, since it is smaller than the sum of its proper divisors (8572536820).

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

7522257140 is a wasteful number, since it uses less digits than its factorization.

7522257140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096531 (or 7096529 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 7522257140 is about 86730.9468413668. The cubic root of 7522257140 is about 1959.3682140453.

Adding to 7522257140 its reverse (417522257), we get a palindrome (7939779397).

The spelling of 7522257140 in words is "seven billion, five hundred twenty-two million, two hundred fifty-seven thousand, one hundred forty".