57421336 has 72 divisors (see below), whose sum is σ = 129922380. Its totient is φ = 23720256.

The previous prime is 57421333. The next prime is 57421339. The reversal of 57421336 is 63312475.

It is an interprime number because it is at equal distance from previous prime (57421333) and next prime (57421339).

It is a junction number, because it is equal to n+sod(n) for n = 57421298 and 57421307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57421333) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 536595 + ... + 536701.

Almost surely, 2^57421336 is an apocalyptic number.

57421336 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57421336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64961190).

57421336 is an abundant number, since it is smaller than the sum of its proper divisors (72501044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57421336 is a wasteful number, since it uses less digits than its factorization.

57421336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 153 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 57421336 is about 7577.6867182538. The cubic root of 57421336 is about 385.7960388993.

The spelling of 57421336 in words is "fifty-seven million, four hundred twenty-one thousand, three hundred thirty-six".