52780890 has 16 divisors (see below), whose sum is σ = 126674208. Its totient is φ = 14074896.

The previous prime is 52780843. The next prime is 52780891. The reversal of 52780890 is 9808725.

It is not an unprimeable number, because it can be changed into a prime (52780891) 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, 879652 + ... + 879711.

It is an arithmetic number, because the mean of its divisors is an integer number (7917138).

Almost surely, 2^52780890 is an apocalyptic number.

52780890 is an abundant number, since it is smaller than the sum of its proper divisors (73893318).

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

52780890 is a wasteful number, since it uses less digits than its factorization.

52780890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759373.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 52780890 is about 7265.0457672337. The cubic root of 52780890 is about 375.1102253756.

The spelling of 52780890 in words is "fifty-two million, seven hundred eighty thousand, eight hundred ninety".