81014253 has 16 divisors (see below), whose sum is σ = 111745536. Its totient is φ = 52153920.

The previous prime is 81014251. The next prime is 81014273. The reversal of 81014253 is 35241018.

It is not a de Polignac number, because 81014253 - 2¹ = 81014251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81014251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73575 + ... + 74667.

It is an arithmetic number, because the mean of its divisors is an integer number (6984096).

Almost surely, 2^81014253 is an apocalyptic number.

It is an amenable number.

81014253 is a deficient number, since it is larger than the sum of its proper divisors (30731283).

81014253 is a wasteful number, since it uses less digits than its factorization.

81014253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 81014253 is about 9000.7917985031. The cubic root of 81014253 is about 432.7002478546.

The spelling of 81014253 in words is "eighty-one million, fourteen thousand, two hundred fifty-three".