57036421 has 8 divisors (see below), whose sum is σ = 62465760. Its totient is φ = 51755952.

The previous prime is 57036407. The next prime is 57036431. The reversal of 57036421 is 12463075.

57036421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 57036421 - 2⁷ = 57036293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57036421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57036401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36415 + ... + 37948.

It is an arithmetic number, because the mean of its divisors is an integer number (7808220).

Almost surely, 2^57036421 is an apocalyptic number.

It is an amenable number.

57036421 is a deficient number, since it is larger than the sum of its proper divisors (5429339).

57036421 is a wasteful number, since it uses less digits than its factorization.

57036421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74435.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 57036421 is about 7552.2460897405. The cubic root of 57036421 is about 384.9320642485.

Adding to 57036421 its reverse (12463075), we get a palindrome (69499496).

The spelling of 57036421 in words is "fifty-seven million, thirty-six thousand, four hundred twenty-one".