80527621 has 6 divisors (see below), whose sum is σ = 81015890. Its totient is φ = 80040768.

The previous prime is 80527619. The next prime is 80527631. The reversal of 80527621 is 12672508.

It can be written as a sum of positive squares in 3 ways, for example, as 38925121 + 41602500 = 6239^2 + 6450^2 .

It is not a de Polignac number, because 80527621 - 2¹ = 80527619 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 (80527631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135501 + ... + 136093.

Almost surely, 2^80527621 is an apocalyptic number.

It is an amenable number.

80527621 is a deficient number, since it is larger than the sum of its proper divisors (488269).

80527621 is an frugal number, since it uses more digits than its factorization.

80527621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 80527621 is about 8973.7183486000. The cubic root of 80527621 is about 431.8321339248.

The spelling of 80527621 in words is "eighty million, five hundred twenty-seven thousand, six hundred twenty-one".