2057545478 has 8 divisors (see below), whose sum is σ = 3132382872. Its totient is φ = 1013417856.

The previous prime is 2057545463. The next prime is 2057545481. The reversal of 2057545478 is 8745457502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7677275 + ... + 7677542.

It is an arithmetic number, because the mean of its divisors is an integer number (391547859).

Almost surely, 2^2057545478 is an apocalyptic number.

2057545478 is a deficient number, since it is larger than the sum of its proper divisors (1074837394).

2057545478 is a wasteful number, since it uses less digits than its factorization.

2057545478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15354886.

The product of its (nonzero) digits is 1568000, while the sum is 47.

The square root of 2057545478 is about 45360.1750217082. The cubic root of 2057545478 is about 1271.8907662187.

The spelling of 2057545478 in words is "two billion, fifty-seven million, five hundred forty-five thousand, four hundred seventy-eight".