405500151 has 16 divisors (see below), whose sum is σ = 622626048. Its totient is φ = 229944000.

The previous prime is 405500129. The next prime is 405500171. The reversal of 405500151 is 151005504.

It is not a de Polignac number, because 405500151 - 2⁶ = 405500087 is a prime.

It is a super-2 number, since 2×405500151² = 328860744922045602, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405500171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70950 + ... + 76451.

It is an arithmetic number, because the mean of its divisors is an integer number (38914128).

Almost surely, 2^405500151 is an apocalyptic number.

405500151 is a deficient number, since it is larger than the sum of its proper divisors (217125897).

405500151 is a wasteful number, since it uses less digits than its factorization.

405500151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147542.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 405500151 is about 20137.0343149134. The cubic root of 405500151 is about 740.1680595894.

Adding to 405500151 its reverse (151005504), we get a palindrome (556505655).

The spelling of 405500151 in words is "four hundred five million, five hundred thousand, one hundred fifty-one".