38424557 has 2 divisors, whose sum is σ = 38424558. Its totient is φ = 38424556.

The previous prime is 38424553. The next prime is 38424569. The reversal of 38424557 is 75542483.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37589161 + 835396 = 6131^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 38424557 - 2² = 38424553 is a prime.

It is a Chen prime.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 38424557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38424553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19212278 + 19212279.

It is an arithmetic number, because the mean of its divisors is an integer number (19212279).

Almost surely, 2^38424557 is an apocalyptic number.

It is an amenable number.

38424557 is a deficient number, since it is larger than the sum of its proper divisors (1).

38424557 is an equidigital number, since it uses as much as digits as its factorization.

38424557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 38.

The square root of 38424557 is about 6198.7544716661. The cubic root of 38424557 is about 337.4449680733. Note that the first 3 decimals are identical.

The spelling of 38424557 in words is "thirty-eight million, four hundred twenty-four thousand, five hundred fifty-seven".