40145455 has 12 divisors (see below), whose sum is σ = 56040120. Its totient is φ = 27528144.

The previous prime is 40145447. The next prime is 40145477. The reversal of 40145455 is 55454104.

It is not a de Polignac number, because 40145455 - 2³ = 40145447 is a prime.

It is a super-2 number, since 2×40145455² = 3223315114314050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81685 + ... + 82174.

It is an arithmetic number, because the mean of its divisors is an integer number (4670010).

Almost surely, 2^40145455 is an apocalyptic number.

40145455 is a deficient number, since it is larger than the sum of its proper divisors (15894665).

40145455 is a wasteful number, since it uses less digits than its factorization.

40145455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163878 (or 163871 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 40145455 is about 6336.0441128515. The cubic root of 40145455 is about 342.4092287915.

Adding to 40145455 its reverse (55454104), we get a palindrome (95599559).

The spelling of 40145455 in words is "forty million, one hundred forty-five thousand, four hundred fifty-five".