511161652 has 6 divisors (see below), whose sum is σ = 894532898. Its totient is φ = 255580824.

The previous prime is 511161619. The next prime is 511161653. The reversal of 511161652 is 256161115.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 308213136 + 202948516 = 17556^2 + 14246^2 .

It is a super-2 number, since 2×511161652² = 522572468950738208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 511161652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511161653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63895203 + ... + 63895210.

Almost surely, 2^511161652 is an apocalyptic number.

It is an amenable number.

511161652 is a deficient number, since it is larger than the sum of its proper divisors (383371246).

511161652 is a wasteful number, since it uses less digits than its factorization.

511161652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127790417 (or 127790415 counting only the distinct ones).

The product of its digits is 1800, while the sum is 28.

The square root of 511161652 is about 22608.8843599148. The cubic root of 511161652 is about 799.5631218820.

The spelling of 511161652 in words is "five hundred eleven million, one hundred sixty-one thousand, six hundred fifty-two".