52021263 has 16 divisors (see below), whose sum is σ = 80276480. Its totient is φ = 29349216.

The previous prime is 52021261. The next prime is 52021313. The reversal of 52021263 is 36212025.

It is not a de Polignac number, because 52021263 - 2¹ = 52021261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52021261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14020 + ... + 17337.

It is an arithmetic number, because the mean of its divisors is an integer number (5017280).

Almost surely, 2^52021263 is an apocalyptic number.

52021263 is a deficient number, since it is larger than the sum of its proper divisors (28255217).

52021263 is a wasteful number, since it uses less digits than its factorization.

52021263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31446.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 52021263 is about 7212.5767240287. The cubic root of 52021263 is about 373.3019833546.

Adding to 52021263 its reverse (36212025), we get a palindrome (88233288).

The spelling of 52021263 in words is "fifty-two million, twenty-one thousand, two hundred sixty-three".