52278011 has 4 divisors (see below), whose sum is σ = 54550992. Its totient is φ = 50005032.

The previous prime is 52278007. The next prime is 52278047. The reversal of 52278011 is 11087225.

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

It is a cyclic number.

It is not a de Polignac number, because 52278011 - 2² = 52278007 is a prime.

It is a super-2 number, since 2×52278011² = 5465980868232242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52278091) 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 3 ways as a sum of consecutive naturals, for example, 1136456 + ... + 1136501.

It is an arithmetic number, because the mean of its divisors is an integer number (13637748).

Almost surely, 2^52278011 is an apocalyptic number.

52278011 is a deficient number, since it is larger than the sum of its proper divisors (2272981).

52278011 is a wasteful number, since it uses less digits than its factorization.

52278011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272980.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 52278011 is about 7230.3534491752. The cubic root of 52278011 is about 373.9151127085.

The spelling of 52278011 in words is "fifty-two million, two hundred seventy-eight thousand, eleven".