52090340 has 24 divisors (see below), whose sum is σ = 111185592. Its totient is φ = 20494080.

The previous prime is 52090327. The next prime is 52090349. The reversal of 52090340 is 4309025.

It can be written as a sum of positive squares in 4 ways, for example, as 1737124 + 50353216 = 1318^2 + 7096^2 .

It is not an unprimeable number, because it can be changed into a prime (52090349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20129 + ... + 22568.

It is an arithmetic number, because the mean of its divisors is an integer number (4632733).

Almost surely, 2^52090340 is an apocalyptic number.

It is an amenable number.

52090340 is an abundant number, since it is smaller than the sum of its proper divisors (59095252).

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

52090340 is a wasteful number, since it uses less digits than its factorization.

52090340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42767 (or 42765 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 52090340 is about 7217.3637846516. The cubic root of 52090340 is about 373.4671413071.

Adding to 52090340 its reverse (4309025), we get a palindrome (56399365).

The spelling of 52090340 in words is "fifty-two million, ninety thousand, three hundred forty".