52361690 has 16 divisors (see below), whose sum is σ = 94389192. Its totient is φ = 20913984.

The previous prime is 52361677. The next prime is 52361693. The reversal of 52361690 is 9616325.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46881409 + 5480281 = 6847^2 + 2341^2 .

It is a super-2 number, since 2×52361690² = 5483493159312200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (52361693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112 + ... + 11028.

Almost surely, 2^52361690 is an apocalyptic number.

52361690 is a deficient number, since it is larger than the sum of its proper divisors (42027502).

52361690 is a wasteful number, since it uses less digits than its factorization.

52361690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7681.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 52361690 is about 7236.1377819939. The cubic root of 52361690 is about 374.1145092473.

The spelling of 52361690 in words is "fifty-two million, three hundred sixty-one thousand, six hundred ninety".