75145212 has 72 divisors (see below), whose sum is σ = 199148880. Its totient is φ = 24501600.

The previous prime is 75145201. The next prime is 75145223. The reversal of 75145212 is 21254157.

It is an interprime number because it is at equal distance from previous prime (75145201) and next prime (75145223).

It is a Harshad number since it is a multiple of its sum of digits (27).

75145212 is a Rhonda number in base 10.

Its product of digits (2800) is a multiple of the sum of its prime factors (280).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 743962 + ... + 744062.

Almost surely, 2^75145212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75145212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99574440).

75145212 is an abundant number, since it is smaller than the sum of its proper divisors (124003668).

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

75145212 is a wasteful number, since it uses less digits than its factorization.

75145212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 189 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 75145212 is about 8668.6338023935. The cubic root of 75145212 is about 421.9883272828.

Adding to 75145212 its reverse (21254157), we get a palindrome (96399369).

It can be divided in two parts, 75145 and 212, that added together give a palindrome (75357).

The spelling of 75145212 in words is "seventy-five million, one hundred forty-five thousand, two hundred twelve".