15522501020 has 48 divisors (see below), whose sum is σ = 35337304128. Its totient is φ = 5693414400.

The previous prime is 15522501019. The next prime is 15522501023. The reversal of 15522501020 is 2010522551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15522501023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158429 + ... + 236948.

It is an arithmetic number, because the mean of its divisors is an integer number (736193836).

Almost surely, 2^15522501020 is an apocalyptic number.

15522501020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15522501020 is an abundant number, since it is smaller than the sum of its proper divisors (19814803108).

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

15522501020 is a wasteful number, since it uses less digits than its factorization.

15522501020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395550 (or 395548 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 15522501020 in words is "fifteen billion, five hundred twenty-two million, five hundred one thousand, twenty".