13770531 has 12 divisors (see below), whose sum is σ = 19939920. Its totient is φ = 9157680.

The previous prime is 13770529. The next prime is 13770539. The reversal of 13770531 is 13507731.

13770531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13770531 - 2¹ = 13770529 is a prime.

It is a super-2 number, since 2×13770531² = 379255048043922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13770495 and 13770504.

It is not an unprimeable number, because it can be changed into a prime (13770539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2490 + ... + 5808.

It is an arithmetic number, because the mean of its divisors is an integer number (1661660).

Almost surely, 2^13770531 is an apocalyptic number.

13770531 is a deficient number, since it is larger than the sum of its proper divisors (6169389).

13770531 is a wasteful number, since it uses less digits than its factorization.

13770531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 2205, while the sum is 27.

The square root of 13770531 is about 3710.8666103755. The cubic root of 13770531 is about 239.6901731192.

The spelling of 13770531 in words is "thirteen million, seven hundred seventy thousand, five hundred thirty-one".