53169240 has 32 divisors (see below), whose sum is σ = 159508080. Its totient is φ = 14178432.

The previous prime is 53169203. The next prime is 53169241. The reversal of 53169240 is 4296135.

It is a super-3 number, since 3×53169240³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53169198 and 53169207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53169241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221419 + ... + 221658.

Almost surely, 2^53169240 is an apocalyptic number.

It is an amenable number.

53169240 is an abundant number, since it is smaller than the sum of its proper divisors (106338840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53169240 is a wasteful number, since it uses less digits than its factorization.

53169240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443091 (or 443087 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 53169240 is about 7291.7240759645. The cubic root of 53169240 is about 376.0279706067.

The spelling of 53169240 in words is "fifty-three million, one hundred sixty-nine thousand, two hundred forty".