75494454 has 64 divisors (see below), whose sum is σ = 178083840. Its totient is φ = 20891520.

The previous prime is 75494449. The next prime is 75494473. The reversal of 75494454 is 45449457.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (403200) is a multiple of the sum of its prime divisors (525).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202212 + ... + 202584.

It is an arithmetic number, because the mean of its divisors is an integer number (2782560).

Almost surely, 2^75494454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75494454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89041920).

75494454 is an abundant number, since it is smaller than the sum of its proper divisors (102589386).

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

75494454 is a wasteful number, since it uses less digits than its factorization.

75494454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its digits is 403200, while the sum is 42.

The square root of 75494454 is about 8688.7544561922. The cubic root of 75494454 is about 422.6410560377.

The spelling of 75494454 in words is "seventy-five million, four hundred ninety-four thousand, four hundred fifty-four".