36378121 has 4 divisors (see below), whose sum is σ = 39176452. Its totient is φ = 33579792.

The previous prime is 36378101. The next prime is 36378131. The reversal of 36378121 is 12187363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12187363 = 71 ⋅171653.

It can be written as a sum of positive squares in 2 ways, for example, as 3200521 + 33177600 = 1789^2 + 5760^2 .

It is a cyclic number.

It is not a de Polignac number, because 36378121 - 2¹³ = 36369929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36378101) 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, 1399146 + ... + 1399171.

It is an arithmetic number, because the mean of its divisors is an integer number (9794113).

Almost surely, 2^36378121 is an apocalyptic number.

It is an amenable number.

36378121 is a deficient number, since it is larger than the sum of its proper divisors (2798331).

36378121 is a wasteful number, since it uses less digits than its factorization.

36378121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798330.

The product of its digits is 6048, while the sum is 31.

The square root of 36378121 is about 6031.4277745821. The cubic root of 36378121 is about 331.3447453674.

The spelling of 36378121 in words is "thirty-six million, three hundred seventy-eight thousand, one hundred twenty-one".