40161503 has 2 divisors, whose sum is σ = 40161504. Its totient is φ = 40161502.

The previous prime is 40161469. The next prime is 40161551. The reversal of 40161503 is 30516104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40161503 - 2¹² = 40157407 is a prime.

It is a super-2 number, since 2×40161503² = 3225892646438018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40161553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20080751 + 20080752.

It is an arithmetic number, because the mean of its divisors is an integer number (20080752).

Almost surely, 2^40161503 is an apocalyptic number.

40161503 is a deficient number, since it is larger than the sum of its proper divisors (1).

40161503 is an equidigital number, since it uses as much as digits as its factorization.

40161503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 40161503 is about 6337.3103916409. The cubic root of 40161503 is about 342.4548483289.

Adding to 40161503 its reverse (30516104), we get a palindrome (70677607).

The spelling of 40161503 in words is "forty million, one hundred sixty-one thousand, five hundred three".