75123961 has 4 divisors (see below), whose sum is σ = 81953424. Its totient is φ = 68294500.

The previous prime is 75123953. The next prime is 75123989. The reversal of 75123961 is 16932157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75123961 - 2³ = 75123953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75123941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3414715 + ... + 3414736.

It is an arithmetic number, because the mean of its divisors is an integer number (20488356).

Almost surely, 2^75123961 is an apocalyptic number.

It is an amenable number.

75123961 is a deficient number, since it is larger than the sum of its proper divisors (6829463).

75123961 is a wasteful number, since it uses less digits than its factorization.

75123961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829462.

The product of its digits is 11340, while the sum is 34.

The square root of 75123961 is about 8667.4079747062. The cubic root of 75123961 is about 421.9485442229.

The spelling of 75123961 in words is "seventy-five million, one hundred twenty-three thousand, nine hundred sixty-one".