20214437 has 2 divisors, whose sum is σ = 20214438. Its totient is φ = 20214436.

The previous prime is 20214427. The next prime is 20214451. The reversal of 20214437 is 73441202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10764961 + 9449476 = 3281^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 20214437 - 2⁶ = 20214373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20214427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107218 + 10107219.

It is an arithmetic number, because the mean of its divisors is an integer number (10107219).

Almost surely, 2^20214437 is an apocalyptic number.

It is an amenable number.

20214437 is a deficient number, since it is larger than the sum of its proper divisors (1).

20214437 is an equidigital number, since it uses as much as digits as its factorization.

20214437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20214437 is about 4496.0468191512. The cubic root of 20214437 is about 272.4084342917.

Adding to 20214437 its reverse (73441202), we get a palindrome (93655639).

The spelling of 20214437 in words is "twenty million, two hundred fourteen thousand, four hundred thirty-seven".