5205405145 has 32 divisors (see below), whose sum is σ = 6523545600. Its totient is φ = 3983070720.

The previous prime is 5205405143. The next prime is 5205405169. The reversal of 5205405145 is 5415045025.

It is not a de Polignac number, because 5205405145 - 2¹ = 5205405143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (5205405143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6073557 + ... + 6074413.

It is an arithmetic number, because the mean of its divisors is an integer number (203860800).

Almost surely, 2^5205405145 is an apocalyptic number.

It is an amenable number.

5205405145 is a deficient number, since it is larger than the sum of its proper divisors (1318140455).

5205405145 is a wasteful number, since it uses less digits than its factorization.

5205405145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 5205405145 is about 72148.4937126202. The cubic root of 5205405145 is about 1733.0782781969.

The spelling of 5205405145 in words is "five billion, two hundred five million, four hundred five thousand, one hundred forty-five".