7144505 has 8 divisors (see below), whose sum is σ = 9077832. Its totient is φ = 5379328.

The previous prime is 7144499. The next prime is 7144507. The reversal of 7144505 is 5054417.

It can be written as a sum of positive squares in 4 ways, for example, as 1229881 + 5914624 = 1109^2 + 2432^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7144505 - 2¹⁶ = 7078969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7144507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41942 + ... + 42111.

It is an arithmetic number, because the mean of its divisors is an integer number (1134729).

Almost surely, 2^7144505 is an apocalyptic number.

It is an amenable number.

7144505 is a deficient number, since it is larger than the sum of its proper divisors (1933327).

7144505 is a wasteful number, since it uses less digits than its factorization.

7144505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84075.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 7144505 is about 2672.9206871885. The cubic root of 7144505 is about 192.6004872554.

The spelling of 7144505 in words is "seven million, one hundred forty-four thousand, five hundred five".