403772513 has 2 divisors, whose sum is σ = 403772514. Its totient is φ = 403772512.

The previous prime is 403772471. The next prime is 403772531. The reversal of 403772513 is 315277304.

Together with next prime (403772531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313750369 + 90022144 = 17713^2 + 9488^2 .

It is a cyclic number.

It is not a de Polignac number, because 403772513 - 2¹⁶ = 403706977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 403772513.

It is not a weakly prime, because it can be changed into another prime (403772543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201886256 + 201886257.

It is an arithmetic number, because the mean of its divisors is an integer number (201886257).

Almost surely, 2^403772513 is an apocalyptic number.

It is an amenable number.

403772513 is a deficient number, since it is larger than the sum of its proper divisors (1).

403772513 is an equidigital number, since it uses as much as digits as its factorization.

403772513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 403772513 is about 20094.0914947653. The cubic root of 403772513 is about 739.1153984039.

The spelling of 403772513 in words is "four hundred three million, seven hundred seventy-two thousand, five hundred thirteen".