81053151 has 8 divisors (see below), whose sum is σ = 110584320. Its totient is φ = 52778712.

The previous prime is 81053143. The next prime is 81053153. The reversal of 81053151 is 15135018.

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

It is not a de Polignac number, because 81053151 - 2³ = 81053143 is a prime.

It is a super-2 number, since 2×81053151² = 13139226574057602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81053153) 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, 314031 + ... + 314288.

It is an arithmetic number, because the mean of its divisors is an integer number (13823040).

Almost surely, 2^81053151 is an apocalyptic number.

81053151 is a deficient number, since it is larger than the sum of its proper divisors (29531169).

81053151 is a wasteful number, since it uses less digits than its factorization.

81053151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628365.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 81053151 is about 9002.9523490908. The cubic root of 81053151 is about 432.7694886798.

Adding to 81053151 its reverse (15135018), we get a palindrome (96188169).

The spelling of 81053151 in words is "eighty-one million, fifty-three thousand, one hundred fifty-one".