5401440523 has 4 divisors (see below), whose sum is σ = 5547425440. Its totient is φ = 5255455608.

The previous prime is 5401440511. The next prime is 5401440533. The reversal of 5401440523 is 3250441045.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5401440523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5401440491 and 5401440500.

It is not an unprimeable number, because it can be changed into a prime (5401440503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72992403 + ... + 72992476.

It is an arithmetic number, because the mean of its divisors is an integer number (1386856360).

Almost surely, 2^5401440523 is an apocalyptic number.

5401440523 is a deficient number, since it is larger than the sum of its proper divisors (145984917).

5401440523 is a wasteful number, since it uses less digits than its factorization.

5401440523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145984916.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 5401440523 is about 73494.4931474461. The cubic root of 5401440523 is about 1754.5666333097.

Adding to 5401440523 its reverse (3250441045), we get a palindrome (8651881568).

The spelling of 5401440523 in words is "five billion, four hundred one million, four hundred forty thousand, five hundred twenty-three".