161553838 has 32 divisors (see below), whose sum is σ = 258572160. Its totient is φ = 75569760.

The previous prime is 161553793. The next prime is 161553853. The reversal of 161553838 is 838355161.

161553838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161553838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526081 + ... + 526387.

It is an arithmetic number, because the mean of its divisors is an integer number (8080380).

Almost surely, 2^161553838 is an apocalyptic number.

161553838 is a deficient number, since it is larger than the sum of its proper divisors (97018322).

161553838 is a wasteful number, since it uses less digits than its factorization.

161553838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its digits is 86400, while the sum is 40.

The square root of 161553838 is about 12710.3830784127. The cubic root of 161553838 is about 544.6352670025.

The spelling of 161553838 in words is "one hundred sixty-one million, five hundred fifty-three thousand, eight hundred thirty-eight".