15575 has 12 divisors (see below), whose sum is σ = 22320. Its totient is φ = 10560.

The previous prime is 15569. The next prime is 15581. The reversal of 15575 is 57551.

15575 = T₄₀ + T₄₁ + ... + T₅₃.

15575 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15569) and next prime (15581).

It is not a de Polignac number, because 15575 - 2⁴ = 15559 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 15575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131 + ... + 219.

It is an arithmetic number, because the mean of its divisors is an integer number (1860).

2¹⁵⁵⁷⁵ is an apocalyptic number.

15575 is a deficient number, since it is larger than the sum of its proper divisors (6745).

15575 is an equidigital number, since it uses as much as digits as its factorization.

15575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 101 counting only the distinct ones).

The product of its digits is 875, while the sum is 23.

The square root of 15575 is about 124.7998397435. The cubic root of 15575 is about 24.9733048382.

The spelling of 15575 in words is "fifteen thousand, five hundred seventy-five".