40015455 has 16 divisors (see below), whose sum is σ = 64364544. Its totient is φ = 21228320.

The previous prime is 40015441. The next prime is 40015483. The reversal of 40015455 is 55451004.

It is not a de Polignac number, because 40015455 - 2⁹ = 40014943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4119 + ... + 9848.

It is an arithmetic number, because the mean of its divisors is an integer number (4022784).

Almost surely, 2^40015455 is an apocalyptic number.

40015455 is a deficient number, since it is larger than the sum of its proper divisors (24349089).

40015455 is a wasteful number, since it uses less digits than its factorization.

40015455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14166.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 40015455 is about 6325.7770273698. Note that the first 3 decimals coincide. The cubic root of 40015455 is about 342.0392297942.

Adding to 40015455 its reverse (55451004), we get a palindrome (95466459).

It can be divided in two parts, 40015 and 455, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 40015455 in words is "forty million, fifteen thousand, four hundred fifty-five".