75155601 has 4 divisors (see below), whose sum is σ = 100207472. Its totient is φ = 50103732.

The previous prime is 75155581. The next prime is 75155627. The reversal of 75155601 is 10655157.

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: 10655157 = 3 ⋅3551719.

It is not a de Polignac number, because 75155601 - 2¹⁷ = 75024529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75155671) 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, 12525931 + ... + 12525936.

It is an arithmetic number, because the mean of its divisors is an integer number (25051868).

Almost surely, 2^75155601 is an apocalyptic number.

It is an amenable number.

75155601 is a deficient number, since it is larger than the sum of its proper divisors (25051871).

75155601 is a wasteful number, since it uses less digits than its factorization.

75155601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25051870.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 75155601 is about 8669.2330110570. The cubic root of 75155601 is about 422.0077733420.

The spelling of 75155601 in words is "seventy-five million, one hundred fifty-five thousand, six hundred one".