45203531 has 2 divisors, whose sum is σ = 45203532. Its totient is φ = 45203530.

The previous prime is 45203513. The next prime is 45203537. The reversal of 45203531 is 13530254.

Together with previous prime (45203513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45203531 - 2⁶ = 45203467 is a prime.

It is a super-2 number, since 2×45203531² = 4086718429735922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45203497 and 45203506.

It is not a weakly prime, because it can be changed into another prime (45203537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22601765 + 22601766.

It is an arithmetic number, because the mean of its divisors is an integer number (22601766).

Almost surely, 2^45203531 is an apocalyptic number.

45203531 is a deficient number, since it is larger than the sum of its proper divisors (1).

45203531 is an equidigital number, since it uses as much as digits as its factorization.

45203531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 45203531 is about 6723.3571227475. The cubic root of 45203531 is about 356.2247744117.

Adding to 45203531 its reverse (13530254), we get a palindrome (58733785).

The spelling of 45203531 in words is "forty-five million, two hundred three thousand, five hundred thirty-one".