15965145 has 24 divisors (see below), whose sum is σ = 31626816. Its totient is φ = 7298208.

The previous prime is 15965129. The next prime is 15965161. The reversal of 15965145 is 54156951.

It is an interprime number because it is at equal distance from previous prime (15965129) and next prime (15965161).

It is not a de Polignac number, because 15965145 - 2⁴ = 15965129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25027 + ... + 25656.

It is an arithmetic number, because the mean of its divisors is an integer number (1317784).

Almost surely, 2^15965145 is an apocalyptic number.

15965145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15965145 is a deficient number, since it is larger than the sum of its proper divisors (15661671).

15965145 is a wasteful number, since it uses less digits than its factorization.

15965145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50701 (or 50698 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 15965145 is about 3995.6407496170. The cubic root of 15965145 is about 251.8010996656.

It can be divided in two parts, 15965 and 145, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 15965145 in words is "fifteen million, nine hundred sixty-five thousand, one hundred forty-five".