15551254452 has 24 divisors (see below), whose sum is σ = 36288556416. Its totient is φ = 5183423488.

The previous prime is 15551254427. The next prime is 15551254457. The reversal of 15551254452 is 25445215551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 15551254452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15551254457) 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, 226213 + ... + 286835.

It is an arithmetic number, because the mean of its divisors is an integer number (1512023184).

Almost surely, 2^15551254452 is an apocalyptic number.

15551254452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15551254452 is an abundant number, since it is smaller than the sum of its proper divisors (20737301964).

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

15551254452 is a wasteful number, since it uses less digits than its factorization.

15551254452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82007 (or 82005 counting only the distinct ones).

The product of its digits is 200000, while the sum is 39.

The spelling of 15551254452 in words is "fifteen billion, five hundred fifty-one million, two hundred fifty-four thousand, four hundred fifty-two".