37226421 has 6 divisors (see below), whose sum is σ = 53771510. Its totient is φ = 24817608.

The previous prime is 37226417. The next prime is 37226437. The reversal of 37226421 is 12462273.

It can be written as a sum of positive squares in only one way, i.e., 36469521 + 756900 = 6039^2 + 870^2 .

It is not a de Polignac number, because 37226421 - 2² = 37226417 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 (37226461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2068126 + ... + 2068143.

Almost surely, 2^37226421 is an apocalyptic number.

It is an amenable number.

37226421 is a deficient number, since it is larger than the sum of its proper divisors (16545089).

37226421 is a wasteful number, since it uses less digits than its factorization.

37226421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4136275 (or 4136272 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 37226421 is about 6101.3458351416. The cubic root of 37226421 is about 333.9005195741.

Adding to 37226421 its reverse (12462273), we get a palindrome (49688694).

The spelling of 37226421 in words is "thirty-seven million, two hundred twenty-six thousand, four hundred twenty-one".