13145487 has 16 divisors (see below), whose sum is σ = 18066048. Its totient is φ = 8497440.

The previous prime is 13145479. The next prime is 13145491. The reversal of 13145487 is 78454131.

13145487 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 not a de Polignac number, because 13145487 - 2³ = 13145479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145417) 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, 23068 + ... + 23630.

It is an arithmetic number, because the mean of its divisors is an integer number (1129128).

Almost surely, 2^13145487 is an apocalyptic number.

13145487 is a deficient number, since it is larger than the sum of its proper divisors (4920561).

13145487 is a wasteful number, since it uses less digits than its factorization.

13145487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its digits is 13440, while the sum is 33.

The square root of 13145487 is about 3625.6705586691. The cubic root of 13145487 is about 236.0073671453.

The spelling of 13145487 in words is "thirteen million, one hundred forty-five thousand, four hundred eighty-seven".