2140545251 has 4 divisors (see below), whose sum is σ = 2305202592. Its totient is φ = 1975887912.

The previous prime is 2140545241. The next prime is 2140545287. The reversal of 2140545251 is 1525450412.

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 2140545251 - 2¹⁰ = 2140544227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140545221) 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, 82328651 + ... + 82328676.

It is an arithmetic number, because the mean of its divisors is an integer number (576300648).

Almost surely, 2^2140545251 is an apocalyptic number.

2140545251 is a deficient number, since it is larger than the sum of its proper divisors (164657341).

2140545251 is a wasteful number, since it uses less digits than its factorization.

2140545251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164657340.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2140545251 is about 46266.0269636372. The cubic root of 2140545251 is about 1288.7681791155.

Adding to 2140545251 its reverse (1525450412), we get a palindrome (3665995663).

The spelling of 2140545251 in words is "two billion, one hundred forty million, five hundred forty-five thousand, two hundred fifty-one".