164431553 has 16 divisors (see below), whose sum is σ = 193560192. Its totient is φ = 137712000.

The previous prime is 164431543. The next prime is 164431591. The reversal of 164431553 is 355134461.

It is a cyclic number.

It is not a de Polignac number, because 164431553 - 2¹⁸ = 164169409 is a prime.

It is a super-3 number, since 3×164431553³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164431523) 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, 108068 + ... + 109578.

It is an arithmetic number, because the mean of its divisors is an integer number (12097512).

Almost surely, 2^164431553 is an apocalyptic number.

164431553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

164431553 is a deficient number, since it is larger than the sum of its proper divisors (29128639).

164431553 is a wasteful number, since it uses less digits than its factorization.

164431553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its digits is 21600, while the sum is 32.

The square root of 164431553 is about 12823.0867188833. The cubic root of 164431553 is about 547.8500675390.

The spelling of 164431553 in words is "one hundred sixty-four million, four hundred thirty-one thousand, five hundred fifty-three".