380520401 has 4 divisors (see below), whose sum is σ = 402903972. Its totient is φ = 358136832.

The previous prime is 380520359. The next prime is 380520421. The reversal of 380520401 is 104025083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104025083 = 59 ⋅1763137.

It can be written as a sum of positive squares in 2 ways, for example, as 143976001 + 236544400 = 11999^2 + 15380^2 .

It is a cyclic number.

It is not a de Polignac number, because 380520401 - 2¹⁴ = 380504017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (380520421) 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, 11191760 + ... + 11191793.

It is an arithmetic number, because the mean of its divisors is an integer number (100725993).

Almost surely, 2^380520401 is an apocalyptic number.

It is an amenable number.

380520401 is a deficient number, since it is larger than the sum of its proper divisors (22383571).

380520401 is a wasteful number, since it uses less digits than its factorization.

380520401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22383570.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 380520401 is about 19506.9321268107. The cubic root of 380520401 is about 724.6461378957.

Adding to 380520401 its reverse (104025083), we get a palindrome (484545484).

The spelling of 380520401 in words is "three hundred eighty million, five hundred twenty thousand, four hundred one".