7515449253 has 24 divisors (see below), whose sum is σ = 11714032512. Its totient is φ = 4615661088.

The previous prime is 7515449243. The next prime is 7515449303. The reversal of 7515449253 is 3529445157.

7515449253 is a `hidden beast` number, since 7 + 5 + 154 + 492 + 5 + 3 = 666.

It is not a de Polignac number, because 7515449253 - 2²¹ = 7513352101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7515449199 and 7515449208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7515449243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5001 + ... + 122702.

It is an arithmetic number, because the mean of its divisors is an integer number (488084688).

Almost surely, 2^7515449253 is an apocalyptic number.

It is an amenable number.

7515449253 is a deficient number, since it is larger than the sum of its proper divisors (4198583259).

7515449253 is a wasteful number, since it uses less digits than its factorization.

7515449253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128225 (or 128222 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 7515449253 is about 86691.6907956005. The cubic root of 7515449253 is about 1958.7769383465.

The spelling of 7515449253 in words is "seven billion, five hundred fifteen million, four hundred forty-nine thousand, two hundred fifty-three".