38512561 has 2 divisors, whose sum is σ = 38512562. Its totient is φ = 38512560.

The previous prime is 38512543. The next prime is 38512577. The reversal of 38512561 is 16521583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37896336 + 616225 = 6156^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 38512561 - 2⁷ = 38512433 is a prime.

It is not a weakly prime, because it can be changed into another prime (38512541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19256280 + 19256281.

It is an arithmetic number, because the mean of its divisors is an integer number (19256281).

Almost surely, 2^38512561 is an apocalyptic number.

It is an amenable number.

38512561 is a deficient number, since it is larger than the sum of its proper divisors (1).

38512561 is an equidigital number, since it uses as much as digits as its factorization.

38512561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 38512561 is about 6205.8489346744. The cubic root of 38512561 is about 337.7023890798.

The spelling of 38512561 in words is "thirty-eight million, five hundred twelve thousand, five hundred sixty-one".