38456521 has 2 divisors, whose sum is σ = 38456522. Its totient is φ = 38456520.

The previous prime is 38456501. The next prime is 38456563. The reversal of 38456521 is 12565483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32080896 + 6375625 = 5664^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 38456521 - 2⁷ = 38456393 is a prime.

It is not a weakly prime, because it can be changed into another prime (38456501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19228260 + 19228261.

It is an arithmetic number, because the mean of its divisors is an integer number (19228261).

Almost surely, 2^38456521 is an apocalyptic number.

It is an amenable number.

38456521 is a deficient number, since it is larger than the sum of its proper divisors (1).

38456521 is an equidigital number, since it uses as much as digits as its factorization.

38456521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 38456521 is about 6201.3321955851. The cubic root of 38456521 is about 337.5385115633.

The spelling of 38456521 in words is "thirty-eight million, four hundred fifty-six thousand, five hundred twenty-one".