57250000 has 70 divisors (see below), whose sum is σ = 139256030. Its totient is φ = 22800000.

The previous prime is 57249979. The next prime is 57250003. The reversal of 57250000 is 5275.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 54346384 + 2903616 = 7372^2 + 1704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57250000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57250003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 249886 + ... + 250114.

Almost surely, 2^57250000 is an apocalyptic number.

57250000 is a gapful number since it is divisible by the number (50) 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 57250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69628015).

57250000 is an abundant number, since it is smaller than the sum of its proper divisors (82006030).

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

57250000 is an frugal number, since it uses more digits than its factorization.

57250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 57250000 is about 7566.3729752108. The cubic root of 57250000 is about 385.4119389080.

Adding to 57250000 its product of nonzero digits (350), we get a triangular number (57250350 = T₁₀₇₀₀).

Adding to 57250000 its reverse (5275), we get a palindrome (57255275).

The spelling of 57250000 in words is "fifty-seven million, two hundred fifty thousand".