80071551 has 32 divisors (see below), whose sum is σ = 136012800. Its totient is φ = 45606240.

The previous prime is 80071531. The next prime is 80071553. The reversal of 80071551 is 15517008.

It is not a de Polignac number, because 80071551 - 2⁹ = 80071039 is a prime.

It is a super-2 number, since 2×80071551² = 12822906559091202, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80071553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86670 + ... + 87588.

It is an arithmetic number, because the mean of its divisors is an integer number (4250400).

Almost surely, 2^80071551 is an apocalyptic number.

80071551 is a deficient number, since it is larger than the sum of its proper divisors (55941249).

80071551 is a wasteful number, since it uses less digits than its factorization.

80071551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396 (or 1390 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 80071551 is about 8948.2708385475. The cubic root of 80071551 is about 431.0153596915.

Adding to 80071551 its reverse (15517008), we get a palindrome (95588559).

The spelling of 80071551 in words is "eighty million, seventy-one thousand, five hundred fifty-one".