75136401 has 12 divisors (see below), whose sum is σ = 108637620. Its totient is φ = 50041440.

The previous prime is 75136387. The next prime is 75136427. The reversal of 75136401 is 10463157.

75136401 is a `hidden beast` number, since 7 + 5 + 13 + 640 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50126400 + 25010001 = 7080^2 + 5001^2 .

It is not a de Polignac number, because 75136401 - 2¹⁰ = 75135377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75136471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7095 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (9053135).

Almost surely, 2^75136401 is an apocalyptic number.

It is an amenable number.

75136401 is a deficient number, since it is larger than the sum of its proper divisors (33501219).

75136401 is a wasteful number, since it uses less digits than its factorization.

75136401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8256 (or 8253 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 75136401 is about 8668.1255759247. The cubic root of 75136401 is about 421.9718335086.

Adding to 75136401 its reverse (10463157), we get a palindrome (85599558).

The spelling of 75136401 in words is "seventy-five million, one hundred thirty-six thousand, four hundred one".