53278031 has 4 divisors (see below), whose sum is σ = 53749632. Its totient is φ = 52806432.

The previous prime is 53278021. The next prime is 53278037. The reversal of 53278031 is 13087235.

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 53278031 - 2⁶ = 53277967 is a prime.

It is a super-2 number, since 2×53278031² = 5677097174473922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53277985 and 53278003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53278037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235631 + ... + 235856.

It is an arithmetic number, because the mean of its divisors is an integer number (13437408).

Almost surely, 2^53278031 is an apocalyptic number.

53278031 is a deficient number, since it is larger than the sum of its proper divisors (471601).

53278031 is a wasteful number, since it uses less digits than its factorization.

53278031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471600.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 53278031 is about 7299.1801594426. The cubic root of 53278031 is about 376.2842628371.

The spelling of 53278031 in words is "fifty-three million, two hundred seventy-eight thousand, thirty-one".