36502421 has 2 divisors, whose sum is σ = 36502422. Its totient is φ = 36502420.

The previous prime is 36502393. The next prime is 36502447. The reversal of 36502421 is 12420563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34939921 + 1562500 = 5911^2 + 1250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36502421 is a prime.

It is a super-2 number, since 2×36502421² = 2664853477722482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36592421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18251210 + 18251211.

It is an arithmetic number, because the mean of its divisors is an integer number (18251211).

Almost surely, 2^36502421 is an apocalyptic number.

It is an amenable number.

36502421 is a deficient number, since it is larger than the sum of its proper divisors (1).

36502421 is an equidigital number, since it uses as much as digits as its factorization.

36502421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 36502421 is about 6041.7233468606. The cubic root of 36502421 is about 331.7217057497.

Adding to 36502421 its reverse (12420563), we get a palindrome (48922984).

The spelling of 36502421 in words is "thirty-six million, five hundred two thousand, four hundred twenty-one".