75542045 has 4 divisors (see below), whose sum is σ = 90650460. Its totient is φ = 60433632.

The previous prime is 75542023. The next prime is 75542053. The reversal of 75542045 is 54024557.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34351321 + 41190724 = 5861^2 + 6418^2 .

It is a cyclic number.

It is not a de Polignac number, because 75542045 - 2⁸ = 75541789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7554200 + ... + 7554209.

It is an arithmetic number, because the mean of its divisors is an integer number (22662615).

Almost surely, 2^75542045 is an apocalyptic number.

It is an amenable number.

75542045 is a deficient number, since it is larger than the sum of its proper divisors (15108415).

75542045 is a wasteful number, since it uses less digits than its factorization.

75542045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15108414.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 75542045 is about 8691.4926796264. The cubic root of 75542045 is about 422.7298470432.

The spelling of 75542045 in words is "seventy-five million, five hundred forty-two thousand, forty-five".