52199090 has 16 divisors (see below), whose sum is σ = 94438872. Its totient is φ = 20772864.

The previous prime is 52199053. The next prime is 52199111. The reversal of 52199090 is 9099125.

It can be written as a sum of positive squares in 4 ways, for example, as 51652969 + 546121 = 7187^2 + 739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52199090.

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, 11279 + ... + 15218.

Almost surely, 2^52199090 is an apocalyptic number.

52199090 is a deficient number, since it is larger than the sum of its proper divisors (42239782).

52199090 is a wasteful number, since it uses less digits than its factorization.

52199090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26701.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 52199090 is about 7224.8937708454. The cubic root of 52199090 is about 373.7268588186.

Adding to 52199090 its sum of digits (35), we get a palindrome (52199125).

The spelling of 52199090 in words is "fifty-two million, one hundred ninety-nine thousand, ninety".