15901056 has 128 divisors (see below), whose sum is σ = 48470400. Its totient is φ = 5128704.

The previous prime is 15901051. The next prime is 15901097. The reversal of 15901056 is 65010951.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15901051) 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, 148555 + ... + 148661.

It is an arithmetic number, because the mean of its divisors is an integer number (378675).

Almost surely, 2^15901056 is an apocalyptic number.

15901056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15901056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24235200).

15901056 is an abundant number, since it is smaller than the sum of its proper divisors (32569344).

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

15901056 is a wasteful number, since it uses less digits than its factorization.

15901056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 15901056 is about 3987.6128197206. The cubic root of 15901056 is about 251.4637121289.

The spelling of 15901056 in words is "fifteen million, nine hundred one thousand, fifty-six".