12527977 has 18 divisors (see below), whose sum is σ = 16026234. Its totient is φ = 9757440.

The previous prime is 12527969. The next prime is 12527987. The reversal of 12527977 is 77972521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6456681 + 6071296 = 2541^2 + 2464^2 .

It is not a de Polignac number, because 12527977 - 2³ = 12527969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12527927) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4873 + ... + 6985.

Almost surely, 2^12527977 is an apocalyptic number.

It is an amenable number.

12527977 is a deficient number, since it is larger than the sum of its proper divisors (3498257).

12527977 is a wasteful number, since it uses less digits than its factorization.

12527977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2131 counting only the distinct ones).

The product of its digits is 61740, while the sum is 40.

The square root of 12527977 is about 3539.4882398449. The cubic root of 12527977 is about 232.2524563077.

It can be divided in two parts, 1252 and 7977, that added together give a palindrome (9229).

The spelling of 12527977 in words is "twelve million, five hundred twenty-seven thousand, nine hundred seventy-seven".