53172061 has 4 divisors (see below), whose sum is σ = 53317312. Its totient is φ = 53026812.

The previous prime is 53172059. The next prime is 53172103. The reversal of 53172061 is 16027135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16027135 = 5 ⋅3205427.

It is a cyclic number.

It is not a de Polignac number, because 53172061 - 2¹ = 53172059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53172001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72075 + ... + 72808.

It is an arithmetic number, because the mean of its divisors is an integer number (13329328).

Almost surely, 2^53172061 is an apocalyptic number.

It is an amenable number.

53172061 is a deficient number, since it is larger than the sum of its proper divisors (145251).

53172061 is a wasteful number, since it uses less digits than its factorization.

53172061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145250.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 53172061 is about 7291.9175118757. The cubic root of 53172061 is about 376.0346207936.

Adding to 53172061 its reverse (16027135), we get a palindrome (69199196).

The spelling of 53172061 in words is "fifty-three million, one hundred seventy-two thousand, sixty-one".