36221501 has 4 divisors (see below), whose sum is σ = 36297600. Its totient is φ = 36145404.

The previous prime is 36221489. The next prime is 36221503. The reversal of 36221501 is 10512263.

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: 10512263 = 19 ⋅553277.

It is a cyclic number.

It is not a de Polignac number, because 36221501 - 2¹⁰ = 36220477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36221503) 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, 37331 + ... + 38288.

It is an arithmetic number, because the mean of its divisors is an integer number (9074400).

Almost surely, 2^36221501 is an apocalyptic number.

It is an amenable number.

36221501 is a deficient number, since it is larger than the sum of its proper divisors (76099).

36221501 is an equidigital number, since it uses as much as digits as its factorization.

36221501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76098.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 36221501 is about 6018.4301109176. The cubic root of 36221501 is about 330.8685445938.

Adding to 36221501 its reverse (10512263), we get a palindrome (46733764).

The spelling of 36221501 in words is "thirty-six million, two hundred twenty-one thousand, five hundred one".