40520455 has 8 divisors (see below), whose sum is σ = 48688704. Its totient is φ = 32373600.

The previous prime is 40520449. The next prime is 40520477. The reversal of 40520455 is 55402504.

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

It is not a de Polignac number, because 40520455 - 2¹⁵ = 40487687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831 + ... + 9040.

It is an arithmetic number, because the mean of its divisors is an integer number (6086088).

Almost surely, 2^40520455 is an apocalyptic number.

40520455 is a deficient number, since it is larger than the sum of its proper divisors (8168249).

40520455 is an equidigital number, since it uses as much as digits as its factorization.

40520455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10697.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 40520455 is about 6365.5679243882. The cubic root of 40520455 is about 343.4720781707.

Adding to 40520455 its reverse (55402504), we get a palindrome (95922959).

The spelling of 40520455 in words is "forty million, five hundred twenty thousand, four hundred fifty-five".