407157145 has 4 divisors (see below), whose sum is σ = 488588580. Its totient is φ = 325725712.

The previous prime is 407157083. The next prime is 407157169. The reversal of 407157145 is 541751704.

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

It can be written as a sum of positive squares in 2 ways, for example, as 320983056 + 86174089 = 17916^2 + 9283^2 .

It is a cyclic number.

It is not a de Polignac number, because 407157145 - 2¹¹ = 407155097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 407157145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40715710 + ... + 40715719.

It is an arithmetic number, because the mean of its divisors is an integer number (122147145).

Almost surely, 2^407157145 is an apocalyptic number.

It is an amenable number.

407157145 is a deficient number, since it is larger than the sum of its proper divisors (81431435).

407157145 is an equidigital number, since it uses as much as digits as its factorization.

407157145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81431434.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 407157145 is about 20178.1353201925. The cubic root of 407157145 is about 741.1748715977.

It can be divided in two parts, 4071 and 57145, that added together give a palindrome (61216).

The spelling of 407157145 in words is "four hundred seven million, one hundred fifty-seven thousand, one hundred forty-five".