506380901 has 4 divisors (see below), whose sum is σ = 545333292. Its totient is φ = 467428512.

The previous prime is 506380879. The next prime is 506380909. The reversal of 506380901 is 109083605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109083605 = 5 ⋅21816721.

It can be written as a sum of positive squares in 2 ways, for example, as 260047876 + 246333025 = 16126^2 + 15695^2 .

It is a cyclic number.

It is not a de Polignac number, because 506380901 - 2¹⁰ = 506379877 is a prime.

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 (506380909) 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, 19476176 + ... + 19476201.

It is an arithmetic number, because the mean of its divisors is an integer number (136333323).

Almost surely, 2^506380901 is an apocalyptic number.

It is an amenable number.

506380901 is a deficient number, since it is larger than the sum of its proper divisors (38952391).

506380901 is a wasteful number, since it uses less digits than its factorization.

506380901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38952390.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 506380901 is about 22502.9087230962. The cubic root of 506380901 is about 797.0626138409.

The spelling of 506380901 in words is "five hundred six million, three hundred eighty thousand, nine hundred one".