10101256 has 32 divisors (see below), whose sum is σ = 20937600. Its totient is φ = 4530240.

The previous prime is 10101239. The next prime is 10101277. The reversal of 10101256 is 65210101.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6226 + ... + 7678.

It is an arithmetic number, because the mean of its divisors is an integer number (654300).

Almost surely, 2^10101256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10101256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10468800).

10101256 is an abundant number, since it is smaller than the sum of its proper divisors (10836344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10101256 is a wasteful number, since it uses less digits than its factorization.

10101256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1545 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 10101256 is about 3178.2473157387. The cubic root of 10101256 is about 216.1681931870.

Adding to 10101256 its reverse (65210101), we get a palindrome (75311357).

The spelling of 10101256 in words is "ten million, one hundred one thousand, two hundred fifty-six".