36537381 has 12 divisors (see below), whose sum is σ = 53520480. Its totient is φ = 24014760.

The previous prime is 36537373. The next prime is 36537407. The reversal of 36537381 is 18373563.

It is not a de Polignac number, because 36537381 - 2³ = 36537373 is a prime.

It is a super-2 number, since 2×36537381² = 2669960420678322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36537481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27951 + ... + 29228.

It is an arithmetic number, because the mean of its divisors is an integer number (4460040).

Almost surely, 2^36537381 is an apocalyptic number.

It is an amenable number.

36537381 is a deficient number, since it is larger than the sum of its proper divisors (16983099).

36537381 is a wasteful number, since it uses less digits than its factorization.

36537381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57256 (or 57253 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 36537381 is about 6044.6158686884. The cubic root of 36537381 is about 331.8275735265.

The spelling of 36537381 in words is "thirty-six million, five hundred thirty-seven thousand, three hundred eighty-one".