166070553 has 16 divisors (see below), whose sum is σ = 242651136. Its totient is φ = 100193040.

The previous prime is 166070551. The next prime is 166070587. The reversal of 166070553 is 355070661.

It is not a de Polignac number, because 166070553 - 2¹ = 166070551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166070551) 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, 3925 + ... + 18642.

It is an arithmetic number, because the mean of its divisors is an integer number (15165696).

Almost surely, 2^166070553 is an apocalyptic number.

It is an amenable number.

166070553 is a deficient number, since it is larger than the sum of its proper divisors (76580583).

166070553 is a wasteful number, since it uses less digits than its factorization.

166070553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22804.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 166070553 is about 12886.8364232654. The cubic root of 166070553 is about 549.6643163747.

The spelling of 166070553 in words is "one hundred sixty-six million, seventy thousand, five hundred fifty-three".