5123401581 has 32 divisors (see below), whose sum is σ = 7152582528. Its totient is φ = 3259146240.

The previous prime is 5123401541. The next prime is 5123401583. The reversal of 5123401581 is 1851043215.

It is not a de Polignac number, because 5123401581 - 2¹⁹ = 5122877293 is a prime.

It is a super-2 number, since 2×5123401581² = 52498487520386599122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123401583) 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 31 ways as a sum of consecutive naturals, for example, 1214566 + ... + 1218776.

It is an arithmetic number, because the mean of its divisors is an integer number (223518204).

Almost surely, 2^5123401581 is an apocalyptic number.

It is an amenable number.

5123401581 is a deficient number, since it is larger than the sum of its proper divisors (2029180947).

5123401581 is a wasteful number, since it uses less digits than its factorization.

5123401581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 5123401581 is about 71577.9406032333. The cubic root of 5123401581 is about 1723.9293594089.

Adding to 5123401581 its reverse (1851043215), we get a palindrome (6974444796).

The spelling of 5123401581 in words is "five billion, one hundred twenty-three million, four hundred one thousand, five hundred eighty-one".