35972161 has 4 divisors (see below), whose sum is σ = 37536192. Its totient is φ = 34408132.

The previous prime is 35972147. The next prime is 35972173. The reversal of 35972161 is 16127953.

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: 16127953 = 53 ⋅304301.

It is a cyclic number.

It is not a de Polignac number, because 35972161 - 2¹³ = 35963969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35972861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781981 + ... + 782026.

It is an arithmetic number, because the mean of its divisors is an integer number (9384048).

Almost surely, 2^35972161 is an apocalyptic number.

It is an amenable number.

35972161 is a deficient number, since it is larger than the sum of its proper divisors (1564031).

35972161 is a wasteful number, since it uses less digits than its factorization.

35972161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564030.

The product of its digits is 11340, while the sum is 34.

The square root of 35972161 is about 5997.6796346587. The cubic root of 35972161 is about 330.1075896510.

It can be divided in two parts, 35 and 972161, that added together give a square (972196 = 986²).

The spelling of 35972161 in words is "thirty-five million, nine hundred seventy-two thousand, one hundred sixty-one".