52399994 has 4 divisors (see below), whose sum is σ = 78599994. Its totient is φ = 26199996.

The previous prime is 52399993. The next prime is 52400017. The reversal of 52399994 is 49999325.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34869025 + 17530969 = 5905^2 + 4187^2 .

It is a super-3 number, since 3×52399994³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (52399993) 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 as a sum of consecutive naturals, namely, 13099997 + ... + 13100000.

Almost surely, 2^52399994 is an apocalyptic number.

52399994 is a deficient number, since it is larger than the sum of its proper divisors (26200000).

52399994 is a wasteful number, since it uses less digits than its factorization.

52399994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26199999.

The product of its digits is 787320, while the sum is 50.

The square root of 52399994 is about 7238.7840139073. The cubic root of 52399994 is about 374.2057119905.

The spelling of 52399994 in words is "fifty-two million, three hundred ninety-nine thousand, nine hundred ninety-four".