52020251 has 8 divisors (see below), whose sum is σ = 53010000. Its totient is φ = 51035040.

The previous prime is 52020217. The next prime is 52020257. The reversal of 52020251 is 15202025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-52020251 is a prime.

It is a super-2 number, since 2×52020251² = 5412213028206002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52020257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29585 + ... + 31293.

It is an arithmetic number, because the mean of its divisors is an integer number (6626250).

Almost surely, 2^52020251 is an apocalyptic number.

52020251 is a deficient number, since it is larger than the sum of its proper divisors (989749).

52020251 is a wasteful number, since it uses less digits than its factorization.

52020251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 52020251 is about 7212.5065684545. The cubic root of 52020251 is about 373.2995626518.

Adding to 52020251 its reverse (15202025), we get a palindrome (67222276).

The spelling of 52020251 in words is "fifty-two million, twenty thousand, two hundred fifty-one".