122688553 has 16 divisors (see below), whose sum is σ = 135757440. Its totient is φ = 110179584.

The previous prime is 122688551. The next prime is 122688571. The reversal of 122688553 is 355886221.

It is a cyclic number.

It is not a de Polignac number, because 122688553 - 2¹ = 122688551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122688551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78225 + ... + 79777.

It is an arithmetic number, because the mean of its divisors is an integer number (8484840).

Almost surely, 2^122688553 is an apocalyptic number.

122688553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122688553 is a deficient number, since it is larger than the sum of its proper divisors (13068887).

122688553 is a wasteful number, since it uses less digits than its factorization.

122688553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728.

The product of its digits is 115200, while the sum is 40.

The square root of 122688553 is about 11076.4864916633. The cubic root of 122688553 is about 496.8988764972.

The spelling of 122688553 in words is "one hundred twenty-two million, six hundred eighty-eight thousand, five hundred fifty-three".