36521387 has 4 divisors (see below), whose sum is σ = 41738736. Its totient is φ = 31304040.

The previous prime is 36521383. The next prime is 36521437. The reversal of 36521387 is 78312563.

36521387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78312563 = 7 ⋅11187509.

It is a cyclic number.

It is not a de Polignac number, because 36521387 - 2² = 36521383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36521383) 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, 2608664 + ... + 2608677.

It is an arithmetic number, because the mean of its divisors is an integer number (10434684).

Almost surely, 2^36521387 is an apocalyptic number.

36521387 is a deficient number, since it is larger than the sum of its proper divisors (5217349).

36521387 is an equidigital number, since it uses as much as digits as its factorization.

36521387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5217348.

The product of its digits is 30240, while the sum is 35.

The square root of 36521387 is about 6043.2927283063. The cubic root of 36521387 is about 331.7791480085.

The spelling of 36521387 in words is "thirty-six million, five hundred twenty-one thousand, three hundred eighty-seven".