75545144 has 32 divisors (see below), whose sum is σ = 151463520. Its totient is φ = 35198976.

The previous prime is 75545131. The next prime is 75545147. The reversal of 75545144 is 44154557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75545147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11312 + ... + 16704.

It is an arithmetic number, because the mean of its divisors is an integer number (4733235).

Almost surely, 2^75545144 is an apocalyptic number.

It is an amenable number.

75545144 is an abundant number, since it is smaller than the sum of its proper divisors (75918376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75545144 is a wasteful number, since it uses less digits than its factorization.

75545144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519 (or 5515 counting only the distinct ones).

The product of its digits is 56000, while the sum is 35.

The square root of 75545144 is about 8691.6709555758. The cubic root of 75545144 is about 422.7356275851.

The spelling of 75545144 in words is "seventy-five million, five hundred forty-five thousand, one hundred forty-four".