12551501 has 2 divisors, whose sum is σ = 12551502. Its totient is φ = 12551500.

The previous prime is 12551479. The next prime is 12551507. The reversal of 12551501 is 10515521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12460900 + 90601 = 3530^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 12551501 - 2⁶ = 12551437 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12551507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275750 + 6275751.

It is an arithmetic number, because the mean of its divisors is an integer number (6275751).

Almost surely, 2^12551501 is an apocalyptic number.

It is an amenable number.

12551501 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551501 is an equidigital number, since it uses as much as digits as its factorization.

12551501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 12551501 is about 3542.8097606279. The cubic root of 12551501 is about 232.3977335727.

The spelling of 12551501 in words is "twelve million, five hundred fifty-one thousand, five hundred one".