5408021531 has 4 divisors (see below), whose sum is σ = 5899659864. Its totient is φ = 4916383200.

The previous prime is 5408021497. The next prime is 5408021537. The reversal of 5408021531 is 1351208045.

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-5408021531 is a prime.

It is a super-2 number, since 2×5408021531² = 58493393759519167922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5408021494 and 5408021503.

It is not an unprimeable number, because it can be changed into a prime (5408021537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245819150 + ... + 245819171.

It is an arithmetic number, because the mean of its divisors is an integer number (1474914966).

Almost surely, 2^5408021531 is an apocalyptic number.

5408021531 is a deficient number, since it is larger than the sum of its proper divisors (491638333).

5408021531 is a wasteful number, since it uses less digits than its factorization.

5408021531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491638332.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 5408021531 is about 73539.2516347563. The cubic root of 5408021531 is about 1755.2789205043.

Adding to 5408021531 its reverse (1351208045), we get a palindrome (6759229576).

The spelling of 5408021531 in words is "five billion, four hundred eight million, twenty-one thousand, five hundred thirty-one".