15252504421 has 8 divisors (see below), whose sum is σ = 19016109504. Its totient is φ = 11885068320.

The previous prime is 15252504419. The next prime is 15252504427. The reversal of 15252504421 is 12440525251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15252504421 - 2¹ = 15252504419 is a prime.

It is a super-2 number, since 2×15252504421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15252504427) 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, 99042160 + ... + 99042313.

It is an arithmetic number, because the mean of its divisors is an integer number (2377013688).

Almost surely, 2^15252504421 is an apocalyptic number.

15252504421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

15252504421 is a deficient number, since it is larger than the sum of its proper divisors (3763605083).

15252504421 is a wasteful number, since it uses less digits than its factorization.

15252504421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198084491.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 15252504421 in words is "fifteen billion, two hundred fifty-two million, five hundred four thousand, four hundred twenty-one".