53349878 has 4 divisors (see below), whose sum is σ = 80024820. Its totient is φ = 26674938.

The previous prime is 53349869. The next prime is 53349883. The reversal of 53349878 is 87894335.

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

It is a super-2 number, since 2×53349878² = 5692418965229768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13337468 + ... + 13337471.

It is an arithmetic number, because the mean of its divisors is an integer number (20006205).

Almost surely, 2^53349878 is an apocalyptic number.

53349878 is a deficient number, since it is larger than the sum of its proper divisors (26674942).

53349878 is a wasteful number, since it uses less digits than its factorization.

53349878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26674941.

The product of its digits is 725760, while the sum is 47.

The square root of 53349878 is about 7304.1000814611. The cubic root of 53349878 is about 376.4533303469.

The spelling of 53349878 in words is "fifty-three million, three hundred forty-nine thousand, eight hundred seventy-eight".