2056142551 has 4 divisors (see below), whose sum is σ = 2164360600. Its totient is φ = 1947924504.

The previous prime is 2056142527. The next prime is 2056142581. The reversal of 2056142551 is 1552416502.

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 2056142551 - 2⁷ = 2056142423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056142521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54108996 + ... + 54109033.

It is an arithmetic number, because the mean of its divisors is an integer number (541090150).

Almost surely, 2^2056142551 is an apocalyptic number.

2056142551 is a deficient number, since it is larger than the sum of its proper divisors (108218049).

2056142551 is a wasteful number, since it uses less digits than its factorization.

2056142551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108218048.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 2056142551 is about 45344.7080815391. The cubic root of 2056142551 is about 1271.6016230585.

The spelling of 2056142551 in words is "two billion, fifty-six million, one hundred forty-two thousand, five hundred fifty-one".