57400043 has 4 divisors (see below), whose sum is σ = 57936600. Its totient is φ = 56863488.

The previous prime is 57400037. The next prime is 57400073. The reversal of 57400043 is 34000475.

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 57400043 - 2¹⁶ = 57334507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57399991 and 57400018.

It is not an unprimeable number, because it can be changed into a prime (57400033) 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, 268118 + ... + 268331.

It is an arithmetic number, because the mean of its divisors is an integer number (14484150).

Almost surely, 2^57400043 is an apocalyptic number.

57400043 is a deficient number, since it is larger than the sum of its proper divisors (536557).

57400043 is a wasteful number, since it uses less digits than its factorization.

57400043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536556.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 57400043 is about 7576.2816077546. The cubic root of 57400043 is about 385.7483459961.

The spelling of 57400043 in words is "fifty-seven million, four hundred thousand, forty-three".