40515254 has 8 divisors (see below), whose sum is σ = 65447760. Its totient is φ = 18699336.

The previous prime is 40515253. The next prime is 40515271. The reversal of 40515254 is 45251504.

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 1558279 = 40515254 / (4 + 0 + 5 + 1 + 5 + 2 + 5 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40515253) 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, 779114 + ... + 779165.

It is an arithmetic number, because the mean of its divisors is an integer number (8180970).

Almost surely, 2^40515254 is an apocalyptic number.

40515254 is a deficient number, since it is larger than the sum of its proper divisors (24932506).

40515254 is a wasteful number, since it uses less digits than its factorization.

40515254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558294.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 40515254 is about 6365.1593852786. The cubic root of 40515254 is about 343.4573820975.

Adding to 40515254 its reverse (45251504), we get a palindrome (85766758).

The spelling of 40515254 in words is "forty million, five hundred fifteen thousand, two hundred fifty-four".