40515454 has 48 divisors (see below), whose sum is σ = 76014288. Its totient is φ = 16090368.

The previous prime is 40515401. The next prime is 40515463. The reversal of 40515454 is 45451504.

It is a super-2 number, since 2×40515454² = 3283004025652232, 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 23 ways as a sum of consecutive naturals, for example, 138132 + ... + 138424.

It is an arithmetic number, because the mean of its divisors is an integer number (1583631).

Almost surely, 2^40515454 is an apocalyptic number.

40515454 is a deficient number, since it is larger than the sum of its proper divisors (35498834).

40515454 is a wasteful number, since it uses less digits than its factorization.

40515454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 402 counting only the distinct ones).

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

The square root of 40515454 is about 6365.1750957849. The cubic root of 40515454 is about 343.4579472457.

Adding to 40515454 its reverse (45451504), we get a palindrome (85966958).

The spelling of 40515454 in words is "forty million, five hundred fifteen thousand, four hundred fifty-four".