531949136 has 10 divisors (see below), whose sum is σ = 1030651482. Its totient is φ = 265974560.

The previous prime is 531949073. The next prime is 531949147. The reversal of 531949136 is 631949135.

It can be written as a sum of positive squares in only one way, i.e., 481539136 + 50410000 = 21944^2 + 7100^2 .

It is a super-2 number, since 2×531949136² = 565939766582292992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 531949093 and 531949102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16623395 + ... + 16623426.

Almost surely, 2^531949136 is an apocalyptic number.

It is an amenable number.

531949136 is a deficient number, since it is larger than the sum of its proper divisors (498702346).

531949136 is a wasteful number, since it uses less digits than its factorization.

531949136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33246829 (or 33246823 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 531949136 is about 23064.0225459481. The cubic root of 531949136 is about 810.2580775974.

Subtracting 531949136 from its reverse (631949135), we obtain a palindrome (99999999).

The spelling of 531949136 in words is "five hundred thirty-one million, nine hundred forty-nine thousand, one hundred thirty-six".