180526421 has 8 divisors (see below), whose sum is σ = 187057080. Its totient is φ = 174016192.

The previous prime is 180526399. The next prime is 180526433. The reversal of 180526421 is 124625081.

180526421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1234321 + 179292100 = 1111^2 + 13390^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 180526421 - 2¹⁴ = 180510037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180526721) 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, 14171 + ... + 23703.

It is an arithmetic number, because the mean of its divisors is an integer number (23382135).

Almost surely, 2^180526421 is an apocalyptic number.

It is an amenable number.

180526421 is a deficient number, since it is larger than the sum of its proper divisors (6530659).

180526421 is an equidigital number, since it uses as much as digits as its factorization.

180526421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10215.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 180526421 is about 13436.0120943679. The cubic root of 180526421 is about 565.1715050912.

The spelling of 180526421 in words is "one hundred eighty million, five hundred twenty-six thousand, four hundred twenty-one".