52161450 has 96 divisors (see below), whose sum is σ = 142972992. Its totient is φ = 12480000.

The previous prime is 52161427. The next prime is 52161481. The reversal of 52161450 is 5416125.

It is a super-2 number, since 2×52161450² = 5441633732205000, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 52161450.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166494 + ... + 166806.

It is an arithmetic number, because the mean of its divisors is an integer number (1489302).

Almost surely, 2^52161450 is an apocalyptic number.

52161450 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 52161450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71486496).

52161450 is an abundant number, since it is smaller than the sum of its proper divisors (90811542).

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

52161450 is a wasteful number, since it uses less digits than its factorization.

52161450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 52161450 is about 7222.2884185001. The cubic root of 52161450 is about 373.6370075619.

Adding to 52161450 its reverse (5416125), we get a palindrome (57577575).

It can be divided in two parts, 5216 and 1450, that added together give a palindrome (6666).

The spelling of 52161450 in words is "fifty-two million, one hundred sixty-one thousand, four hundred fifty".