38321257 has 6 divisors (see below), whose sum is σ = 41495982. Its totient is φ = 35373312.

The previous prime is 38321251. The next prime is 38321263. The reversal of 38321257 is 75212383.

It is an interprime number because it is at equal distance from previous prime (38321251) and next prime (38321263).

It can be written as a sum of positive squares in 3 ways, for example, as 2572816 + 35748441 = 1604^2 + 5979^2 .

It is not a de Polignac number, because 38321257 - 2¹⁵ = 38288489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38321251) 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, 113208 + ... + 113545.

It is an arithmetic number, because the mean of its divisors is an integer number (6915997).

Almost surely, 2^38321257 is an apocalyptic number.

It is an amenable number.

38321257 is a deficient number, since it is larger than the sum of its proper divisors (3174725).

38321257 is a wasteful number, since it uses less digits than its factorization.

38321257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226779 (or 226766 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 38321257 is about 6190.4165449508. The cubic root of 38321257 is about 337.1423026950.

The spelling of 38321257 in words is "thirty-eight million, three hundred twenty-one thousand, two hundred fifty-seven".