53357231 has 4 divisors (see below), whose sum is σ = 55078464. Its totient is φ = 51636000.

The previous prime is 53357201. The next prime is 53357243. The reversal of 53357231 is 13275335.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53357231 is a prime.

It is a super-2 number, since 2×53357231² = 5693988199974722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53357194 and 53357203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53357201) 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, 860570 + ... + 860631.

It is an arithmetic number, because the mean of its divisors is an integer number (13769616).

Almost surely, 2^53357231 is an apocalyptic number.

53357231 is a deficient number, since it is larger than the sum of its proper divisors (1721233).

53357231 is a wasteful number, since it uses less digits than its factorization.

53357231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721232.

The product of its digits is 9450, while the sum is 29.

The square root of 53357231 is about 7304.6034115481. The cubic root of 53357231 is about 376.4706245706.

The spelling of 53357231 in words is "fifty-three million, three hundred fifty-seven thousand, two hundred thirty-one".