38120521 has 4 divisors (see below), whose sum is σ = 38689552. Its totient is φ = 37551492.

The previous prime is 38120519. The next prime is 38120543. The reversal of 38120521 is 12502183.

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 38120521 - 2¹ = 38120519 is a prime.

It is a super-2 number, since 2×38120521² = 2906348242622882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38120492 and 38120501.

It is not an unprimeable number, because it can be changed into a prime (38120501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284415 + ... + 284548.

It is an arithmetic number, because the mean of its divisors is an integer number (9672388).

Almost surely, 2^38120521 is an apocalyptic number.

It is an amenable number.

38120521 is a deficient number, since it is larger than the sum of its proper divisors (569031).

38120521 is an equidigital number, since it uses as much as digits as its factorization.

38120521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569030.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 38120521 is about 6174.1818081427. The cubic root of 38120521 is about 336.5525942106.

It can be divided in two parts, 381 and 20521, that added together give a palindrome (20902).

The spelling of 38120521 in words is "thirty-eight million, one hundred twenty thousand, five hundred twenty-one".