40245454 has 4 divisors (see below), whose sum is σ = 60368184. Its totient is φ = 20122726.

The previous prime is 40245451. The next prime is 40245461. The reversal of 40245454 is 45454204.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40245454² = 3239393135332232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061362 + ... + 10061365.

It is an arithmetic number, because the mean of its divisors is an integer number (15092046).

Almost surely, 2^40245454 is an apocalyptic number.

40245454 is a deficient number, since it is larger than the sum of its proper divisors (20122730).

40245454 is a wasteful number, since it uses less digits than its factorization.

40245454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20122729.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 40245454 is about 6343.9304851173. The cubic root of 40245454 is about 342.6932973915.

Adding to 40245454 its reverse (45454204), we get a palindrome (85699658).

The spelling of 40245454 in words is "forty million, two hundred forty-five thousand, four hundred fifty-four".