52449778 has 4 divisors (see below), whose sum is σ = 78674670. Its totient is φ = 26224888.

The previous prime is 52449769. The next prime is 52449779. The reversal of 52449778 is 87794425.

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., 29953729 + 22496049 = 5473^2 + 4743^2 .

It is not an unprimeable number, because it can be changed into a prime (52449779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13112443 + ... + 13112446.

Almost surely, 2^52449778 is an apocalyptic number.

52449778 is a deficient number, since it is larger than the sum of its proper divisors (26224892).

52449778 is a wasteful number, since it uses less digits than its factorization.

52449778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26224891.

The product of its digits is 564480, while the sum is 46.

The square root of 52449778 is about 7242.2218966281. The cubic root of 52449778 is about 374.3241824905.

The spelling of 52449778 in words is "fifty-two million, four hundred forty-nine thousand, seven hundred seventy-eight".