15455851 has 2 divisors, whose sum is σ = 15455852. Its totient is φ = 15455850.

The previous prime is 15455821. The next prime is 15455953. The reversal of 15455851 is 15855451.

It is a weak prime.

It is an emirp because it is prime and its reverse (15855451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15455851 - 2⁵ = 15455819 is a prime.

It is not a weakly prime, because it can be changed into another prime (15455821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7727925 + 7727926.

It is an arithmetic number, because the mean of its divisors is an integer number (7727926).

Almost surely, 2^15455851 is an apocalyptic number.

15455851 is a deficient number, since it is larger than the sum of its proper divisors (1).

15455851 is an equidigital number, since it uses as much as digits as its factorization.

15455851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20000, while the sum is 34.

The square root of 15455851 is about 3931.3930101174. The cubic root of 15455851 is about 249.0945969396.

It can be divided in two parts, 1545 and 5851, that added together give a square (7396 = 86²).

The spelling of 15455851 in words is "fifteen million, four hundred fifty-five thousand, eight hundred fifty-one".