75078061 has 4 divisors (see below), whose sum is σ = 75204000. Its totient is φ = 74952124.

The previous prime is 75078041. The next prime is 75078067. The reversal of 75078061 is 16087057.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16087057 = 7 ⋅2298151.

It is a cyclic number.

It is not a de Polignac number, because 75078061 - 2¹¹ = 75076013 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75078067) 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, 62071 + ... + 63268.

It is an arithmetic number, because the mean of its divisors is an integer number (18801000).

Almost surely, 2^75078061 is an apocalyptic number.

It is an amenable number.

75078061 is a deficient number, since it is larger than the sum of its proper divisors (125939).

75078061 is a wasteful number, since it uses less digits than its factorization.

75078061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125938.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 75078061 is about 8664.7597196922. The cubic root of 75078061 is about 421.8625912473.

The spelling of 75078061 in words is "seventy-five million, seventy-eight thousand, sixty-one".