81214495 has 8 divisors (see below), whose sum is σ = 101694816. Its totient is φ = 62146656.

The previous prime is 81214459. The next prime is 81214517. The reversal of 81214495 is 59441218.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81214495 - 2¹³ = 81206303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81214495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352992 + ... + 353221.

It is an arithmetic number, because the mean of its divisors is an integer number (12711852).

Almost surely, 2^81214495 is an apocalyptic number.

81214495 is a deficient number, since it is larger than the sum of its proper divisors (20480321).

81214495 is a wasteful number, since it uses less digits than its factorization.

81214495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706241.

The product of its digits is 11520, while the sum is 34.

The square root of 81214495 is about 9011.9085104100. The cubic root of 81214495 is about 433.0564546182.

The spelling of 81214495 in words is "eighty-one million, two hundred fourteen thousand, four hundred ninety-five".