38537021 has 2 divisors, whose sum is σ = 38537022. Its totient is φ = 38537020.

The previous prime is 38536991. The next prime is 38537047. The reversal of 38537021 is 12073583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22934521 + 15602500 = 4789^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 38537021 - 2²² = 34342717 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 (38537621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19268510 + 19268511.

It is an arithmetic number, because the mean of its divisors is an integer number (19268511).

Almost surely, 2^38537021 is an apocalyptic number.

It is an amenable number.

38537021 is a deficient number, since it is larger than the sum of its proper divisors (1).

38537021 is an equidigital number, since it uses as much as digits as its factorization.

38537021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 38537021 is about 6207.8193433765. The cubic root of 38537021 is about 337.7738675109.

The spelling of 38537021 in words is "thirty-eight million, five hundred thirty-seven thousand, twenty-one".