36153621 has 30 divisors (see below), whose sum is σ = 62831670. Its totient is φ = 20656944.

The previous prime is 36153617. The next prime is 36153629. The reversal of 36153621 is 12635163.

36153621 is a `hidden beast` number, since 36 + 1 + 5 + 3 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24147396 + 12006225 = 4914^2 + 3465^2 .

It is not a de Polignac number, because 36153621 - 2² = 36153617 is a prime.

It is a super-2 number, since 2×36153621² = 2614168622823282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36153629) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 586 + ... + 8523.

It is an arithmetic number, because the mean of its divisors is an integer number (2094389).

Almost surely, 2^36153621 is an apocalyptic number.

It is an amenable number.

36153621 is a deficient number, since it is larger than the sum of its proper divisors (26678049).

36153621 is an equidigital number, since it uses as much as digits as its factorization.

36153621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9135 (or 9119 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 36153621 is about 6012.7881219947. The cubic root of 36153621 is about 330.6617300351.

Adding to 36153621 its reverse (12635163), we get a palindrome (48788784).

The spelling of 36153621 in words is "thirty-six million, one hundred fifty-three thousand, six hundred twenty-one".