162540403 has 2 divisors, whose sum is σ = 162540404. Its totient is φ = 162540402.

The previous prime is 162540341. The next prime is 162540407. The reversal of 162540403 is 304045261.

162540403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162540403 - 2²⁵ = 128985971 is a prime.

It is not a weakly prime, because it can be changed into another prime (162540407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81270201 + 81270202.

It is an arithmetic number, because the mean of its divisors is an integer number (81270202).

Almost surely, 2^162540403 is an apocalyptic number.

162540403 is a deficient number, since it is larger than the sum of its proper divisors (1).

162540403 is an equidigital number, since it uses as much as digits as its factorization.

162540403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 162540403 is about 12749.1334215310. The cubic root of 162540403 is about 545.7416639845.

Adding to 162540403 its reverse (304045261), we get a palindrome (466585664).

The spelling of 162540403 in words is "one hundred sixty-two million, five hundred forty thousand, four hundred three".