81152603 has 8 divisors (see below), whose sum is σ = 93788640. Its totient is φ = 68777280.

The previous prime is 81152587. The next prime is 81152623. The reversal of 81152603 is 30625118.

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 81152603 - 2⁴ = 81152587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81152623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64508 + ... + 65753.

It is an arithmetic number, because the mean of its divisors is an integer number (11723580).

Almost surely, 2^81152603 is an apocalyptic number.

81152603 is a deficient number, since it is larger than the sum of its proper divisors (12636037).

81152603 is a wasteful number, since it uses less digits than its factorization.

81152603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130357.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 81152603 is about 9008.4739551158. The cubic root of 81152603 is about 432.9464186713.

The spelling of 81152603 in words is "eighty-one million, one hundred fifty-two thousand, six hundred three".