538151265 has 12 divisors (see below), whose sum is σ = 932795604. Its totient is φ = 287013984.

The previous prime is 538151261. The next prime is 538151287. The reversal of 538151265 is 562151835.

It is a happy number.

538151265 is a `hidden beast` number, since 5 + 3 + 81 + 512 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 314140176 + 224011089 = 17724^2 + 14967^2 .

It is not a de Polignac number, because 538151265 - 2² = 538151261 is a prime.

It is a super-2 number, since 2×538151265² = 579213568042200450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (538151261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5979414 + ... + 5979503.

It is an arithmetic number, because the mean of its divisors is an integer number (77732967).

Almost surely, 2^538151265 is an apocalyptic number.

It is an amenable number.

538151265 is a deficient number, since it is larger than the sum of its proper divisors (394644339).

538151265 is a wasteful number, since it uses less digits than its factorization.

538151265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11958928 (or 11958925 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 538151265 is about 23198.0875289322. The cubic root of 538151265 is about 813.3949189496.

The spelling of 538151265 in words is "five hundred thirty-eight million, one hundred fifty-one thousand, two hundred sixty-five".