38553997 has 2 divisors, whose sum is σ = 38553998. Its totient is φ = 38553996.

The previous prime is 38553979. The next prime is 38554027. The reversal of 38553997 is 79935583.

Together with previous prime (38553979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27604516 + 10949481 = 5254^2 + 3309^2 .

It is a cyclic number.

It is not a de Polignac number, because 38553997 - 2¹¹ = 38551949 is a prime.

It is a super-3 number, since 3×38553997³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38553997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38553937) 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 as a sum of consecutive naturals, namely, 19276998 + 19276999.

It is an arithmetic number, because the mean of its divisors is an integer number (19276999).

Almost surely, 2^38553997 is an apocalyptic number.

It is an amenable number.

38553997 is a deficient number, since it is larger than the sum of its proper divisors (1).

38553997 is an equidigital number, since it uses as much as digits as its factorization.

38553997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 49.

The square root of 38553997 is about 6209.1865006617. The cubic root of 38553997 is about 337.8234579849.

The spelling of 38553997 in words is "thirty-eight million, five hundred fifty-three thousand, nine hundred ninety-seven".