81152353 has 8 divisors (see below), whose sum is σ = 84724200. Its totient is φ = 77632128.

The previous prime is 81152329. The next prime is 81152371. The reversal of 81152353 is 35325118.

It can be written as a sum of positive squares in 4 ways, for example, as 33500944 + 47651409 = 5788^2 + 6903^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81152353 is a prime.

It is a super-3 number, since 3×81152353³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81152053) 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, 9676 + ... + 15997.

It is an arithmetic number, because the mean of its divisors is an integer number (10590525).

Almost surely, 2^81152353 is an apocalyptic number.

It is an amenable number.

81152353 is a deficient number, since it is larger than the sum of its proper divisors (3571847).

81152353 is a wasteful number, since it uses less digits than its factorization.

81152353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25811.

The product of its digits is 3600, while the sum is 28.

The square root of 81152353 is about 9008.4600792810. The cubic root of 81152353 is about 432.9459740903.

The spelling of 81152353 in words is "eighty-one million, one hundred fifty-two thousand, three hundred fifty-three".