36021261 has 8 divisors (see below), whose sum is σ = 48220704. Its totient is φ = 23918000.

The previous prime is 36021259. The next prime is 36021281. The reversal of 36021261 is 16212063.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 36021261 - 2¹ = 36021259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36021281) 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, 23166 + ... + 24671.

It is an arithmetic number, because the mean of its divisors is an integer number (6027588).

Almost surely, 2^36021261 is an apocalyptic number.

It is an amenable number.

36021261 is a deficient number, since it is larger than the sum of its proper divisors (12199443).

36021261 is a wasteful number, since it uses less digits than its factorization.

36021261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48091.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 36021261 is about 6001.7714884857. The cubic root of 36021261 is about 330.2577142040.

The spelling of 36021261 in words is "thirty-six million, twenty-one thousand, two hundred sixty-one".