501405455 has 4 divisors (see below), whose sum is σ = 601686552. Its totient is φ = 401124360.

The previous prime is 501405449. The next prime is 501405469. The reversal of 501405455 is 554504105.

It is a happy number.

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

It is not a de Polignac number, because 501405455 - 2¹⁸ = 501143311 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 3 ways as a sum of consecutive naturals, for example, 50140541 + ... + 50140550.

It is an arithmetic number, because the mean of its divisors is an integer number (150421638).

Almost surely, 2^501405455 is an apocalyptic number.

501405455 is a deficient number, since it is larger than the sum of its proper divisors (100281097).

501405455 is a wasteful number, since it uses less digits than its factorization.

501405455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100281096.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 501405455 is about 22392.0846506081. The cubic root of 501405455 is about 794.4435038522.

The spelling of 501405455 in words is "five hundred one million, four hundred five thousand, four hundred fifty-five".