10020251 has 4 divisors (see below), whose sum is σ = 10046400. Its totient is φ = 9994104.

The previous prime is 10020193. The next prime is 10020253. The reversal of 10020251 is 15202001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15202001 = 89 ⋅170809.

It is a cyclic number.

It is not a de Polignac number, because 10020251 - 2⁶ = 10020187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12491 + ... + 13268.

It is an arithmetic number, because the mean of its divisors is an integer number (2511600).

Almost surely, 2^10020251 is an apocalyptic number.

10020251 is a deficient number, since it is larger than the sum of its proper divisors (26149).

10020251 is an equidigital number, since it uses as much as digits as its factorization.

10020251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26148.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 10020251 is about 3165.4780049781. The cubic root of 10020251 is about 215.5888024654.

Adding to 10020251 its reverse (15202001), we get a palindrome (25222252).

The spelling of 10020251 in words is "ten million, twenty thousand, two hundred fifty-one".