36139601 has 4 divisors (see below), whose sum is σ = 37710912. Its totient is φ = 34568292.

The previous prime is 36139567. The next prime is 36139613. The reversal of 36139601 is 10693163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10693163 = 13 ⋅822551.

It is a cyclic number.

It is not a de Polignac number, because 36139601 - 2²² = 31945297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (36139661) 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, 785621 + ... + 785666.

It is an arithmetic number, because the mean of its divisors is an integer number (9427728).

Almost surely, 2^36139601 is an apocalyptic number.

It is an amenable number.

36139601 is a deficient number, since it is larger than the sum of its proper divisors (1571311).

36139601 is a wasteful number, since it uses less digits than its factorization.

36139601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571310.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 36139601 is about 6011.6221604489. The cubic root of 36139601 is about 330.6189821101.

It can be divided in two parts, 361 and 39601, that multiplied together give a square (14295961 = 3781²).

The spelling of 36139601 in words is "thirty-six million, one hundred thirty-nine thousand, six hundred one".