2153545531 has 4 divisors (see below), whose sum is σ = 2164703992. Its totient is φ = 2142387072.

The previous prime is 2153545507. The next prime is 2153545553. The reversal of 2153545531 is 1355453512.

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

It is a cyclic number.

It is not a de Polignac number, because 2153545531 - 2³¹ = 6061883 is a prime.

It is a super-2 number, since 2×2153545531² = 9275516708180143922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2153545571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5578941 + ... + 5579326.

It is an arithmetic number, because the mean of its divisors is an integer number (541175998).

Almost surely, 2^2153545531 is an apocalyptic number.

2153545531 is a deficient number, since it is larger than the sum of its proper divisors (11158461).

2153545531 is a wasteful number, since it uses less digits than its factorization.

2153545531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11158460.

The product of its digits is 45000, while the sum is 34.

The square root of 2153545531 is about 46406.3091723528. The cubic root of 2153545531 is about 1291.3719616207.

The spelling of 2153545531 in words is "two billion, one hundred fifty-three million, five hundred forty-five thousand, five hundred thirty-one".