10154721 has 16 divisors (see below), whose sum is σ = 14470400. Its totient is φ = 6315408.

The previous prime is 10154719. The next prime is 10154741. The reversal of 10154721 is 12745101.

It is a happy number.

It is not a de Polignac number, because 10154721 - 2¹ = 10154719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10154741) 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 15 ways as a sum of consecutive naturals, for example, 2490 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (904400).

Almost surely, 2^10154721 is an apocalyptic number.

It is an amenable number.

10154721 is a deficient number, since it is larger than the sum of its proper divisors (4315679).

10154721 is a wasteful number, since it uses less digits than its factorization.

10154721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 10154721 is about 3186.6472977096. The cubic root of 10154721 is about 216.5489082650.

Adding to 10154721 its reverse (12745101), we get a palindrome (22899822).

The spelling of 10154721 in words is "ten million, one hundred fifty-four thousand, seven hundred twenty-one".