57421453 has 4 divisors (see below), whose sum is σ = 57558268. Its totient is φ = 57284640.

The previous prime is 57421411. The next prime is 57421493. The reversal of 57421453 is 35412475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20187049 + 37234404 = 4493^2 + 6102^2 .

It is a cyclic number.

It is not a de Polignac number, because 57421453 - 2⁹ = 57420941 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 (57421493) 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, 67776 + ... + 68617.

It is an arithmetic number, because the mean of its divisors is an integer number (14389567).

Almost surely, 2^57421453 is an apocalyptic number.

It is an amenable number.

57421453 is a deficient number, since it is larger than the sum of its proper divisors (136815).

57421453 is a wasteful number, since it uses less digits than its factorization.

57421453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136814.

The product of its digits is 16800, while the sum is 31.

The square root of 57421453 is about 7577.6944382840. The cubic root of 57421453 is about 385.7963009280.

The spelling of 57421453 in words is "fifty-seven million, four hundred twenty-one thousand, four hundred fifty-three".