2557374733 has 4 divisors (see below), whose sum is σ = 2616848608. Its totient is φ = 2497900860.

The previous prime is 2557374691. The next prime is 2557374737. The reversal of 2557374733 is 3374737552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2557374733 - 2²⁵ = 2523820301 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 (2557374737) 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, 29736873 + ... + 29736958.

It is an arithmetic number, because the mean of its divisors is an integer number (654212152).

Almost surely, 2^2557374733 is an apocalyptic number.

It is an amenable number.

2557374733 is a deficient number, since it is larger than the sum of its proper divisors (59473875).

2557374733 is an equidigital number, since it uses as much as digits as its factorization.

2557374733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59473874.

The product of its digits is 1852200, while the sum is 46.

The square root of 2557374733 is about 50570.4927106707. The cubic root of 2557374733 is about 1367.5129782966.

The spelling of 2557374733 in words is "two billion, five hundred fifty-seven million, three hundred seventy-four thousand, seven hundred thirty-three".