36121437 has 16 divisors (see below), whose sum is σ = 58378560. Its totient is φ = 21891600.

The previous prime is 36121433. The next prime is 36121439. The reversal of 36121437 is 73412163.

36121437 is a `hidden beast` number, since 3 + 612 + 1 + 43 + 7 = 666.

It is not a de Polignac number, because 36121437 - 2² = 36121433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 36121437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36121433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60514 + ... + 61107.

It is an arithmetic number, because the mean of its divisors is an integer number (3648660).

Almost surely, 2^36121437 is an apocalyptic number.

It is an amenable number.

36121437 is a deficient number, since it is larger than the sum of its proper divisors (22257123).

36121437 is a wasteful number, since it uses less digits than its factorization.

36121437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121641 (or 121635 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 36121437 is about 6010.1112302519. Note that the first 3 decimals coincide. The cubic root of 36121437 is about 330.5635824062.

The spelling of 36121437 in words is "thirty-six million, one hundred twenty-one thousand, four hundred thirty-seven".