101440451 has 4 divisors (see below), whose sum is σ = 115931952. Its totient is φ = 86948952.

The previous prime is 101440403. The next prime is 101440457. The reversal of 101440451 is 154044101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101440451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101440457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7245740 + ... + 7245753.

It is an arithmetic number, because the mean of its divisors is an integer number (28982988).

Almost surely, 2^101440451 is an apocalyptic number.

101440451 is a deficient number, since it is larger than the sum of its proper divisors (14491501).

101440451 is an equidigital number, since it uses as much as digits as its factorization.

101440451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14491500.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 101440451 is about 10071.7650389592. The cubic root of 101440451 is about 466.3769276869.

Adding to 101440451 its reverse (154044101), we get a palindrome (255484552).

The spelling of 101440451 in words is "one hundred one million, four hundred forty thousand, four hundred fifty-one".