12551923 has 2 divisors, whose sum is σ = 12551924. Its totient is φ = 12551922.

The previous prime is 12551911. The next prime is 12551939. The reversal of 12551923 is 32915521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12551923 - 2²¹ = 10454771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12551891 and 12551900.

It is not a weakly prime, because it can be changed into another prime (12554923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275961 + 6275962.

It is an arithmetic number, because the mean of its divisors is an integer number (6275962).

Almost surely, 2^12551923 is an apocalyptic number.

12551923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551923 is an equidigital number, since it uses as much as digits as its factorization.

12551923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 12551923 is about 3542.8693173754. The cubic root of 12551923 is about 232.4003380619.

The spelling of 12551923 in words is "twelve million, five hundred fifty-one thousand, nine hundred twenty-three".