2556147403 has 4 divisors (see below), whose sum is σ = 2556282960. Its totient is φ = 2556011848.

The previous prime is 2556147401. The next prime is 2556147437. The reversal of 2556147403 is 3047416552.

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 2556147403 - 2¹ = 2556147401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556147401) 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, 33823 + ... + 79096.

It is an arithmetic number, because the mean of its divisors is an integer number (639070740).

Almost surely, 2^2556147403 is an apocalyptic number.

2556147403 is a deficient number, since it is larger than the sum of its proper divisors (135557).

2556147403 is a wasteful number, since it uses less digits than its factorization.

2556147403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135556.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 2556147403 is about 50558.3564111809. The cubic root of 2556147403 is about 1367.2941786228.

The spelling of 2556147403 in words is "two billion, five hundred fifty-six million, one hundred forty-seven thousand, four hundred three".