75511045 has 4 divisors (see below), whose sum is σ = 90613260. Its totient is φ = 60408832.

The previous prime is 75511021. The next prime is 75511049. The reversal of 75511045 is 54011557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54011557 = 449 ⋅120293.

It can be written as a sum of positive squares in 2 ways, for example, as 43678881 + 31832164 = 6609^2 + 5642^2 .

It is a cyclic number.

It is not a de Polignac number, because 75511045 - 2⁵ = 75511013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75511049) 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, 7551100 + ... + 7551109.

It is an arithmetic number, because the mean of its divisors is an integer number (22653315).

Almost surely, 2^75511045 is an apocalyptic number.

It is an amenable number.

75511045 is a deficient number, since it is larger than the sum of its proper divisors (15102215).

75511045 is a wasteful number, since it uses less digits than its factorization.

75511045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15102214.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 75511045 is about 8689.7091435790. The cubic root of 75511045 is about 422.6720142683.

The spelling of 75511045 in words is "seventy-five million, five hundred eleven thousand, forty-five".