12651572 has 6 divisors (see below), whose sum is σ = 22140258. Its totient is φ = 6325784.

The previous prime is 12651559. The next prime is 12651581. The reversal of 12651572 is 27515621.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 3189796 = 3076^2 + 1786^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1581443 + ... + 1581450.

It is an arithmetic number, because the mean of its divisors is an integer number (3690043).

Almost surely, 2^12651572 is an apocalyptic number.

It is an amenable number.

12651572 is a deficient number, since it is larger than the sum of its proper divisors (9488686).

12651572 is a wasteful number, since it uses less digits than its factorization.

12651572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162897 (or 3162895 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 12651572 is about 3556.9048342625. The cubic root of 12651572 is about 233.0137220455.

The spelling of 12651572 in words is "twelve million, six hundred fifty-one thousand, five hundred seventy-two".