53543690 has 8 divisors (see below), whose sum is σ = 96378660. Its totient is φ = 21417472.

The previous prime is 53543687. The next prime is 53543713. The reversal of 53543690 is 9634535.

It can be written as a sum of positive squares in 2 ways, for example, as 49434961 + 4108729 = 7031^2 + 2027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×53543690² = 5733853477632200, 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 53543690.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2677175 + ... + 2677194.

Almost surely, 2^53543690 is an apocalyptic number.

53543690 is a deficient number, since it is larger than the sum of its proper divisors (42834970).

53543690 is a wasteful number, since it uses less digits than its factorization.

53543690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5354376.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 53543690 is about 7317.3553965897. The cubic root of 53543690 is about 376.9086453429.

The spelling of 53543690 in words is "fifty-three million, five hundred forty-three thousand, six hundred ninety".