40161652 has 6 divisors (see below), whose sum is σ = 70282898. Its totient is φ = 20080824.

The previous prime is 40161643. The next prime is 40161677. The reversal of 40161652 is 25616104.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 6937956 = 5764^2 + 2634^2 .

It is a super-2 number, since 2×40161652² = 3225916582738208, which contains 22 as substring.

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, 5020203 + ... + 5020210.

Almost surely, 2^40161652 is an apocalyptic number.

It is an amenable number.

40161652 is a deficient number, since it is larger than the sum of its proper divisors (30121246).

40161652 is a wasteful number, since it uses less digits than its factorization.

40161652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10040417 (or 10040415 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 40161652 is about 6337.3221474058. The cubic root of 40161652 is about 342.4552718332.

Adding to 40161652 its reverse (25616104), we get a palindrome (65777756).

The spelling of 40161652 in words is "forty million, one hundred sixty-one thousand, six hundred fifty-two".