53161445 has 4 divisors (see below), whose sum is σ = 63793740. Its totient is φ = 42529152.

The previous prime is 53161429. The next prime is 53161481. The reversal of 53161445 is 54416135.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54416135 = 5 ⋅10883227.

It can be written as a sum of positive squares in 2 ways, for example, as 37368769 + 15792676 = 6113^2 + 3974^2 .

It is a cyclic number.

It is not a de Polignac number, because 53161445 - 2⁴ = 53161429 is a prime.

It is a super-2 number, since 2×53161445² = 5652278468976050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 5316140 + ... + 5316149.

It is an arithmetic number, because the mean of its divisors is an integer number (15948435).

Almost surely, 2^53161445 is an apocalyptic number.

It is an amenable number.

53161445 is a deficient number, since it is larger than the sum of its proper divisors (10632295).

53161445 is a wasteful number, since it uses less digits than its factorization.

53161445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10632294.

The product of its digits is 7200, while the sum is 29.

The square root of 53161445 is about 7291.1895462949. The cubic root of 53161445 is about 376.0095935571.

The spelling of 53161445 in words is "fifty-three million, one hundred sixty-one thousand, four hundred forty-five".