53526381 has 8 divisors (see below), whose sum is σ = 71402304. Its totient is φ = 35667360.

The previous prime is 53526377. The next prime is 53526397. The reversal of 53526381 is 18362535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53526381 - 2² = 53526377 is a prime.

It is a super-2 number, since 2×53526381² = 5730146925914322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53526281) 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, 10536 + ... + 14766.

It is an arithmetic number, because the mean of its divisors is an integer number (8925288).

Almost surely, 2^53526381 is an apocalyptic number.

It is an amenable number.

53526381 is a deficient number, since it is larger than the sum of its proper divisors (17875923).

53526381 is a wasteful number, since it uses less digits than its factorization.

53526381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8451.

The product of its digits is 21600, while the sum is 33.

The square root of 53526381 is about 7316.1725649413. The cubic root of 53526381 is about 376.8680267075.

The spelling of 53526381 in words is "fifty-three million, five hundred twenty-six thousand, three hundred eighty-one".