52172256 has 96 divisors (see below), whose sum is σ = 144764928. Its totient is φ = 16427520.

The previous prime is 52172251. The next prime is 52172261. The reversal of 52172256 is 65227125.

It is an interprime number because it is at equal distance from previous prime (52172251) and next prime (52172261).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×52172256² = 5443888592259072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52172251) 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 15 ways as a sum of consecutive naturals, for example, 139686 + ... + 140058.

It is an arithmetic number, because the mean of its divisors is an integer number (1507968).

Almost surely, 2^52172256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52172256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72382464).

52172256 is an abundant number, since it is smaller than the sum of its proper divisors (92592672).

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

52172256 is a wasteful number, since it uses less digits than its factorization.

52172256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 456 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 52172256 is about 7223.0364805946. The cubic root of 52172256 is about 373.6628072199.

The spelling of 52172256 in words is "fifty-two million, one hundred seventy-two thousand, two hundred fifty-six".