40532513 has 4 divisors (see below), whose sum is σ = 46322880. Its totient is φ = 34742148.

The previous prime is 40532497. The next prime is 40532543. The reversal of 40532513 is 31523504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40532513 - 2⁴ = 40532497 is a prime.

It is a super-2 number, since 2×40532513² = 3285769220190338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40532543) 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, 2895173 + ... + 2895186.

It is an arithmetic number, because the mean of its divisors is an integer number (11580720).

Almost surely, 2^40532513 is an apocalyptic number.

It is an amenable number.

40532513 is a deficient number, since it is larger than the sum of its proper divisors (5790367).

40532513 is an equidigital number, since it uses as much as digits as its factorization.

40532513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5790366.

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

The square root of 40532513 is about 6366.5149807410. The cubic root of 40532513 is about 343.5061447146.

Subtracting from 40532513 its reverse (31523504), we obtain a palindrome (9009009).

The spelling of 40532513 in words is "forty million, five hundred thirty-two thousand, five hundred thirteen".