2153168554 has 4 divisors (see below), whose sum is σ = 3229752834. Its totient is φ = 1076584276.

The previous prime is 2153168503. The next prime is 2153168561. The reversal of 2153168554 is 4558613512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1272562929 + 880605625 = 35673^2 + 29675^2 .

It is a super-2 number, since 2×2153168554² = 9272269643868901832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538292137 + ... + 538292140.

Almost surely, 2^2153168554 is an apocalyptic number.

2153168554 is a deficient number, since it is larger than the sum of its proper divisors (1076584280).

2153168554 is a wasteful number, since it uses less digits than its factorization.

2153168554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076584279.

The product of its digits is 144000, while the sum is 40.

The square root of 2153168554 is about 46402.2472947162. The cubic root of 2153168554 is about 1291.2966058985.

The spelling of 2153168554 in words is "two billion, one hundred fifty-three million, one hundred sixty-eight thousand, five hundred fifty-four".