75121541 has 8 divisors (see below), whose sum is σ = 82119744. Its totient is φ = 68151520.

The previous prime is 75121537. The next prime is 75121547. The reversal of 75121541 is 14512157.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75121541 - 2² = 75121537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75121541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75121547) 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, 1256 + ... + 12321.

It is an arithmetic number, because the mean of its divisors is an integer number (10264968).

Almost surely, 2^75121541 is an apocalyptic number.

It is an amenable number.

75121541 is a deficient number, since it is larger than the sum of its proper divisors (6998203).

75121541 is a wasteful number, since it uses less digits than its factorization.

75121541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14091.

The product of its digits is 1400, while the sum is 26.

The square root of 75121541 is about 8667.2683701383. The cubic root of 75121541 is about 421.9440133718.

Adding to 75121541 its reverse (14512157), we get a palindrome (89633698).

The spelling of 75121541 in words is "seventy-five million, one hundred twenty-one thousand, five hundred forty-one".