15217254052 has 192 divisors, whose sum is σ = 37815644160. Its totient is φ = 5160153600.

The previous prime is 15217254011. The next prime is 15217254077. The reversal of 15217254052 is 25045271251.

It is a super-2 number, since 2×15217254052² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15217253999 and 15217254017.

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, 24115777 + ... + 24116407.

It is an arithmetic number, because the mean of its divisors is an integer number (196956480).

Almost surely, 2^15217254052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15217254052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18907822080).

15217254052 is an abundant number, since it is smaller than the sum of its proper divisors (22598390108).

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

15217254052 is a wasteful number, since it uses less digits than its factorization.

15217254052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 15217254052 in words is "fifteen billion, two hundred seventeen million, two hundred fifty-four thousand, fifty-two".