36551281 has 8 divisors (see below), whose sum is σ = 40720680. Its totient is φ = 32575872.

The previous prime is 36551279. The next prime is 36551287. The reversal of 36551281 is 18215563.

It can be written as a sum of positive squares in 4 ways, for example, as 6477025 + 30074256 = 2545^2 + 5484^2 .

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 36551281 - 2¹ = 36551279 is a prime.

It is a super-2 number, since 2×36551281² = 2671992285481922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36551287) 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, 48100 + ... + 48853.

It is an arithmetic number, because the mean of its divisors is an integer number (5090085).

Almost surely, 2^36551281 is an apocalyptic number.

It is an amenable number.

36551281 is a deficient number, since it is larger than the sum of its proper divisors (4169399).

36551281 is a wasteful number, since it uses less digits than its factorization.

36551281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96995.

The product of its digits is 7200, while the sum is 31.

The square root of 36551281 is about 6045.7655429234. The cubic root of 36551281 is about 331.8696475009.

The spelling of 36551281 in words is "thirty-six million, five hundred fifty-one thousand, two hundred eighty-one".