57398850 has 72 divisors (see below), whose sum is σ = 155163060. Its totient is φ = 15212160.

The previous prime is 57398843. The next prime is 57398881. The reversal of 57398850 is 5889375.

It can be written as a sum of positive squares in 6 ways, for example, as 21650409 + 35748441 = 4653^2 + 5979^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57398796 and 57398805.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 102772 + ... + 103328.

Almost surely, 2^57398850 is an apocalyptic number.

57398850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 57398850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77581530).

57398850 is an abundant number, since it is smaller than the sum of its proper divisors (97764210).

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

57398850 is a wasteful number, since it uses less digits than its factorization.

57398850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 57398850 is about 7576.2028747916. The cubic root of 57398850 is about 385.7456735186.

The spelling of 57398850 in words is "fifty-seven million, three hundred ninety-eight thousand, eight hundred fifty".