52406490 has 16 divisors (see below), whose sum is σ = 125775648. Its totient is φ = 13975056.

The previous prime is 52406479. The next prime is 52406491. The reversal of 52406490 is 9460425.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1746883 = 52406490 / (5 + 2 + 4 + 0 + 6 + 4 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (52406491) 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, 873412 + ... + 873471.

It is an arithmetic number, because the mean of its divisors is an integer number (7860978).

Almost surely, 2^52406490 is an apocalyptic number.

52406490 is an abundant number, since it is smaller than the sum of its proper divisors (73369158).

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

52406490 is a wasteful number, since it uses less digits than its factorization.

52406490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746893.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 52406490 is about 7239.2326941465. The cubic root of 52406490 is about 374.2211747140.

The spelling of 52406490 in words is "fifty-two million, four hundred six thousand, four hundred ninety".