38520401 has 4 divisors (see below), whose sum is σ = 39340032. Its totient is φ = 37700772.

The previous prime is 38520379. The next prime is 38520403. The reversal of 38520401 is 10402583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38520401 - 2⁶ = 38520337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38520403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409745 + ... + 409838.

It is an arithmetic number, because the mean of its divisors is an integer number (9835008).

Almost surely, 2^38520401 is an apocalyptic number.

It is an amenable number.

38520401 is a deficient number, since it is larger than the sum of its proper divisors (819631).

38520401 is an equidigital number, since it uses as much as digits as its factorization.

38520401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819630.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 38520401 is about 6206.4805647001. The cubic root of 38520401 is about 337.7253028775.

Adding to 38520401 its reverse (10402583), we get a palindrome (48922984).

The spelling of 38520401 in words is "thirty-eight million, five hundred twenty thousand, four hundred one".