81036151 has 10 divisors (see below), whose sum is σ = 94539352. Its totient is φ = 69457500.

The previous prime is 81036133. The next prime is 81036157. The reversal of 81036151 is 15163018.

It is not a de Polignac number, because 81036151 - 2⁵ = 81036119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81036157) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14475 + ... + 19276.

Almost surely, 2^81036151 is an apocalyptic number.

81036151 is a deficient number, since it is larger than the sum of its proper divisors (13503201).

81036151 is an frugal number, since it uses more digits than its factorization.

81036151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33779 (or 33758 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 81036151 is about 9002.0081648486. The cubic root of 81036151 is about 432.7392303632.

Adding to 81036151 its reverse (15163018), we get a palindrome (96199169).

The spelling of 81036151 in words is "eighty-one million, thirty-six thousand, one hundred fifty-one".