52145874 has 48 divisors (see below), whose sum is σ = 123911424. Its totient is φ = 15717600.

The previous prime is 52145831. The next prime is 52145881. The reversal of 52145874 is 47854125.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43564 + ... + 44744.

It is an arithmetic number, because the mean of its divisors is an integer number (2581488).

Almost surely, 2^52145874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52145874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61955712).

52145874 is an abundant number, since it is smaller than the sum of its proper divisors (71765550).

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

52145874 is a wasteful number, since it uses less digits than its factorization.

52145874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1420 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 52145874 is about 7221.2100094098. The cubic root of 52145874 is about 373.5998131114.

Adding to 52145874 its reverse (47854125), we get a palindrome (99999999).

The spelling of 52145874 in words is "fifty-two million, one hundred forty-five thousand, eight hundred seventy-four".