164988551 has 16 divisors (see below), whose sum is σ = 208020288. Its totient is φ = 127353600.

The previous prime is 164988539. The next prime is 164988563. The reversal of 164988551 is 155889461.

It is a happy number.

164988551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (164988539) and next prime (164988563).

It is a cyclic number.

It is not a de Polignac number, because 164988551 - 2⁶ = 164988487 is a prime.

It is a super-2 number, since 2×164988551² = 54442443922159202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164988496 and 164988505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164988521) 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, 18380 + ... + 25841.

It is an arithmetic number, because the mean of its divisors is an integer number (13001268).

Almost surely, 2^164988551 is an apocalyptic number.

164988551 is a deficient number, since it is larger than the sum of its proper divisors (43031737).

164988551 is a wasteful number, since it uses less digits than its factorization.

164988551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44282.

The product of its digits is 345600, while the sum is 47.

The square root of 164988551 is about 12844.7869192136. The cubic root of 164988551 is about 548.4679689801.

The spelling of 164988551 in words is "one hundred sixty-four million, nine hundred eighty-eight thousand, five hundred fifty-one".