15945097 has 4 divisors (see below), whose sum is σ = 18222976. Its totient is φ = 13667220.

The previous prime is 15945089. The next prime is 15945119. The reversal of 15945097 is 79054951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79054951 = 1091 ⋅72461.

It is not a de Polignac number, because 15945097 - 2³ = 15945089 is a prime.

It is a super-2 number, since 2×15945097² = 508492236678818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15945037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138929 + ... + 1138942.

It is an arithmetic number, because the mean of its divisors is an integer number (4555744).

Almost surely, 2^15945097 is an apocalyptic number.

It is an amenable number.

15945097 is a deficient number, since it is larger than the sum of its proper divisors (2277879).

15945097 is an equidigital number, since it uses as much as digits as its factorization.

15945097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277878.

The product of its (nonzero) digits is 56700, while the sum is 40.

The square root of 15945097 is about 3993.1312274955. The cubic root of 15945097 is about 251.6956569872.

The spelling of 15945097 in words is "fifteen million, nine hundred forty-five thousand, ninety-seven".