40515145 has 8 divisors (see below), whose sum is σ = 53038080. Its totient is φ = 29465520.

The previous prime is 40515119. The next prime is 40515149. The reversal of 40515145 is 54151504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40515145 - 2⁵ = 40515113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40515149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368265 + ... + 368374.

It is an arithmetic number, because the mean of its divisors is an integer number (6629760).

Almost surely, 2^40515145 is an apocalyptic number.

It is an amenable number.

40515145 is a deficient number, since it is larger than the sum of its proper divisors (12522935).

40515145 is a wasteful number, since it uses less digits than its factorization.

40515145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736655.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 40515145 is about 6365.1508230363. The cubic root of 40515145 is about 343.4570740910.

Adding to 40515145 its reverse (54151504), we get a palindrome (94666649).

The spelling of 40515145 in words is "forty million, five hundred fifteen thousand, one hundred forty-five".