15221451032 has 8 divisors (see below), whose sum is σ = 28540220700. Its totient is φ = 7610725512.

The previous prime is 15221451031. The next prime is 15221451061. The reversal of 15221451032 is 23015412251.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 15221450992 and 15221451010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15221451031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951340682 + ... + 951340697.

Almost surely, 2^15221451032 is an apocalyptic number.

It is an amenable number.

15221451032 is a deficient number, since it is larger than the sum of its proper divisors (13318769668).

15221451032 is a wasteful number, since it uses less digits than its factorization.

15221451032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1902681385 (or 1902681381 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 15221451032 its reverse (23015412251), we get a palindrome (38236863283).

The spelling of 15221451032 in words is "fifteen billion, two hundred twenty-one million, four hundred fifty-one thousand, thirty-two".