52422440 has 32 divisors (see below), whose sum is σ = 134801280. Its totient is φ = 17973312.

The previous prime is 52422439. The next prime is 52422473. The reversal of 52422440 is 4422425.

It is a super-2 number, since 2×52422440² = 5496224431107200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93332 + ... + 93891.

It is an arithmetic number, because the mean of its divisors is an integer number (4212540).

Almost surely, 2^52422440 is an apocalyptic number.

It is an amenable number.

52422440 is an abundant number, since it is smaller than the sum of its proper divisors (82378840).

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

52422440 is a wasteful number, since it uses less digits than its factorization.

52422440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187241 (or 187237 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 52422440 is about 7240.3342464281. The cubic root of 52422440 is about 374.2591358031.

Adding to 52422440 its reverse (4422425), we get a palindrome (56844865).

The spelling of 52422440 in words is "fifty-two million, four hundred twenty-two thousand, four hundred forty".