75145401 has 20 divisors (see below), whose sum is σ = 113356672. Its totient is φ = 49605048.

The previous prime is 75145387. The next prime is 75145403. The reversal of 75145401 is 10454157.

It is a happy number.

It is not a de Polignac number, because 75145401 - 2⁹ = 75144889 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75145403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3840 + ... + 12846.

Almost surely, 2^75145401 is an apocalyptic number.

It is an amenable number.

75145401 is a deficient number, since it is larger than the sum of its proper divisors (38211271).

75145401 is a wasteful number, since it uses less digits than its factorization.

75145401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9122 (or 9113 counting only the distinct ones).

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

The square root of 75145401 is about 8668.6447037585. The cubic root of 75145401 is about 421.9886810677.

Adding to 75145401 its reverse (10454157), we get a palindrome (85599558).

The spelling of 75145401 in words is "seventy-five million, one hundred forty-five thousand, four hundred one".