80623551 has 4 divisors (see below), whose sum is σ = 107498072. Its totient is φ = 53749032.

The previous prime is 80623531. The next prime is 80623597. The reversal of 80623551 is 15532608.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 80623551 - 2⁷ = 80623423 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 (80623511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13437256 + ... + 13437261.

It is an arithmetic number, because the mean of its divisors is an integer number (26874518).

Almost surely, 2^80623551 is an apocalyptic number.

80623551 is a deficient number, since it is larger than the sum of its proper divisors (26874521).

80623551 is a wasteful number, since it uses less digits than its factorization.

80623551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26874520.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 80623551 is about 8979.0618106793. The cubic root of 80623551 is about 432.0035418520.

The spelling of 80623551 in words is "eighty million, six hundred twenty-three thousand, five hundred fifty-one".