57203172 has 96 divisors (see below), whose sum is σ = 162005760. Its totient is φ = 17565984.

The previous prime is 57203171. The next prime is 57203173. The reversal of 57203172 is 27130275.

It is an interprime number because it is at equal distance from previous prime (57203171) and next prime (57203173).

It is a super-3 number, since 3×57203172³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (57203171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113473 + ... + 113975.

It is an arithmetic number, because the mean of its divisors is an integer number (1687560).

Almost surely, 2^57203172 is an apocalyptic number.

57203172 is a gapful number since it is divisible by the number (52) 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 57203172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81002880).

57203172 is an abundant number, since it is smaller than the sum of its proper divisors (104802588).

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

57203172 is a wasteful number, since it uses less digits than its factorization.

57203172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57203172 is about 7563.2778608220. The cubic root of 57203172 is about 385.3068268652.

It can be divided in two parts, 57203 and 172, that added together give a palindrome (57375).

The spelling of 57203172 in words is "fifty-seven million, two hundred three thousand, one hundred seventy-two".