15522081 has 8 divisors (see below), whose sum is σ = 20714784. Its totient is φ = 10338720.

The previous prime is 15522061. The next prime is 15522109. The reversal of 15522081 is 18022551.

15522081 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 15522081 - 2⁵ = 15522049 is a prime.

It is a super-2 number, since 2×15522081² = 481869997141122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15522061) 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, 4005 + ... + 6861.

It is an arithmetic number, because the mean of its divisors is an integer number (2589348).

Almost surely, 2^15522081 is an apocalyptic number.

It is an amenable number.

15522081 is a deficient number, since it is larger than the sum of its proper divisors (5192703).

15522081 is a wasteful number, since it uses less digits than its factorization.

15522081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 15522081 is about 3939.8072287867. The cubic root of 15522081 is about 249.4498890664.

The spelling of 15522081 in words is "fifteen million, five hundred twenty-two thousand, eighty-one".