53231501 has 4 divisors (see below), whose sum is σ = 55067100. Its totient is φ = 51395904.

The previous prime is 53231491. The next prime is 53231513. The reversal of 53231501 is 10513235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10513235 = 5 ⋅2102647.

It can be written as a sum of positive squares in 2 ways, for example, as 13213225 + 40018276 = 3635^2 + 6326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53231501 is a prime.

It is a super-3 number, since 3×53231501³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53231551) 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, 917756 + ... + 917813.

It is an arithmetic number, because the mean of its divisors is an integer number (13766775).

Almost surely, 2^53231501 is an apocalyptic number.

It is an amenable number.

53231501 is a deficient number, since it is larger than the sum of its proper divisors (1835599).

53231501 is a wasteful number, since it uses less digits than its factorization.

53231501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835598.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 53231501 is about 7295.9921189650. The cubic root of 53231501 is about 376.1746891794.

Adding to 53231501 its reverse (10513235), we get a palindrome (63744736).

The spelling of 53231501 in words is "fifty-three million, two hundred thirty-one thousand, five hundred one".