15441997 has 2 divisors, whose sum is σ = 15441998. Its totient is φ = 15441996.

The previous prime is 15441983. The next prime is 15442013. The reversal of 15441997 is 79914451.

15441997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9036036 + 6405961 = 3006^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 15441997 - 2⁷ = 15441869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15441917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7720998 + 7720999.

It is an arithmetic number, because the mean of its divisors is an integer number (7720999).

Almost surely, 2^15441997 is an apocalyptic number.

It is an amenable number.

15441997 is a deficient number, since it is larger than the sum of its proper divisors (1).

15441997 is an equidigital number, since it uses as much as digits as its factorization.

15441997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 15441997 is about 3929.6306442209. The cubic root of 15441997 is about 249.0201485822.

The spelling of 15441997 in words is "fifteen million, four hundred forty-one thousand, nine hundred ninety-seven".