13505975 has 24 divisors (see below), whose sum is σ = 19427328. Its totient is φ = 9122400.

The previous prime is 13505923. The next prime is 13505983. The reversal of 13505975 is 57950531.

It is not a de Polignac number, because 13505975 - 2⁶ = 13505911 is a prime.

It is a super-2 number, since 2×13505975² = 364822721401250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11882 + ... + 12968.

It is an arithmetic number, because the mean of its divisors is an integer number (809472).

Almost surely, 2^13505975 is an apocalyptic number.

13505975 is a deficient number, since it is larger than the sum of its proper divisors (5921353).

13505975 is a wasteful number, since it uses less digits than its factorization.

13505975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 13505975 is about 3675.0476187391. The cubic root of 13505975 is about 238.1452812113.

The spelling of 13505975 in words is "thirteen million, five hundred five thousand, nine hundred seventy-five".