536125981 has 4 divisors (see below), whose sum is σ = 536320864. Its totient is φ = 535931100.

The previous prime is 536125969. The next prime is 536125999. The reversal of 536125981 is 189521635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 536125981 - 2¹¹ = 536123933 is a prime.

It is a super-2 number, since 2×536125981² = 574862135006424722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536125921) 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, 93255 + ... + 98836.

It is an arithmetic number, because the mean of its divisors is an integer number (134080216).

Almost surely, 2^536125981 is an apocalyptic number.

It is an amenable number.

536125981 is a deficient number, since it is larger than the sum of its proper divisors (194883).

536125981 is a wasteful number, since it uses less digits than its factorization.

536125981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194882.

The product of its digits is 64800, while the sum is 40.

The square root of 536125981 is about 23154.3944209301. The cubic root of 536125981 is about 812.3732566325.

The spelling of 536125981 in words is "five hundred thirty-six million, one hundred twenty-five thousand, nine hundred eighty-one".