36113551 has 4 divisors (see below), whose sum is σ = 36464272. Its totient is φ = 35762832.

The previous prime is 36113533. The next prime is 36113569. The reversal of 36113551 is 15531163.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15531163 = 79 ⋅196597.

It is an interprime number because it is at equal distance from previous prime (36113533) and next prime (36113569).

It is a cyclic number.

It is not a de Polignac number, because 36113551 - 2⁹ = 36113039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36113501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175206 + ... + 175411.

It is an arithmetic number, because the mean of its divisors is an integer number (9116068).

Almost surely, 2^36113551 is an apocalyptic number.

36113551 is a deficient number, since it is larger than the sum of its proper divisors (350721).

36113551 is a wasteful number, since it uses less digits than its factorization.

36113551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350720.

The product of its digits is 1350, while the sum is 25.

The square root of 36113551 is about 6009.4551333711. The cubic root of 36113551 is about 330.5395245396.

The spelling of 36113551 in words is "thirty-six million, one hundred thirteen thousand, five hundred fifty-one".