1057578143 has 4 divisors (see below), whose sum is σ = 1119788640. Its totient is φ = 995367648.

The previous prime is 1057578139. The next prime is 1057578173. The reversal of 1057578143 is 3418757501.

It is a happy number.

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 1057578143 - 2² = 1057578139 is a prime.

It is a super-2 number, since 2×1057578143² = 2236943057102656898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057578143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057578103) 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, 31105223 + ... + 31105256.

It is an arithmetic number, because the mean of its divisors is an integer number (279947160).

Almost surely, 2^1057578143 is an apocalyptic number.

1057578143 is a deficient number, since it is larger than the sum of its proper divisors (62210497).

1057578143 is an equidigital number, since it uses as much as digits as its factorization.

1057578143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62210496.

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 1057578143 is about 32520.4265500931. The cubic root of 1057578143 is about 1018.8357030889.

The spelling of 1057578143 in words is "one billion, fifty-seven million, five hundred seventy-eight thousand, one hundred forty-three".