38355561 has 12 divisors (see below), whose sum is σ = 55626480. Its totient is φ = 25467000.

The previous prime is 38355539. The next prime is 38355563. The reversal of 38355561 is 16555383.

It is not a de Polignac number, because 38355561 - 2⁶ = 38355497 is a prime.

It is a super-2 number, since 2×38355561² = 2942298119249442, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (38355563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6231 + ... + 10748.

It is an arithmetic number, because the mean of its divisors is an integer number (4635540).

Almost surely, 2^38355561 is an apocalyptic number.

It is an amenable number.

38355561 is a deficient number, since it is larger than the sum of its proper divisors (17270919).

38355561 is a wasteful number, since it uses less digits than its factorization.

38355561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17236 (or 17233 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 38355561 is about 6193.1866595477. The cubic root of 38355561 is about 337.2428724675.

The spelling of 38355561 in words is "thirty-eight million, three hundred fifty-five thousand, five hundred sixty-one".