2051456503 has 4 divisors (see below), whose sum is σ = 2140650288. Its totient is φ = 1962262720.

The previous prime is 2051456501. The next prime is 2051456507. The reversal of 2051456503 is 3056541502.

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 2051456503 - 2¹ = 2051456501 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 (2051456501) 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, 44596858 + ... + 44596903.

It is an arithmetic number, because the mean of its divisors is an integer number (535162572).

Almost surely, 2^2051456503 is an apocalyptic number.

2051456503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2051456503 is a deficient number, since it is larger than the sum of its proper divisors (89193785).

2051456503 is an equidigital number, since it uses as much as digits as its factorization.

2051456503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89193784.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 2051456503 is about 45293.0072196581. The cubic root of 2051456503 is about 1270.6348744630.

The spelling of 2051456503 in words is "two billion, fifty-one million, four hundred fifty-six thousand, five hundred three".