75378957 has 16 divisors (see below), whose sum is σ = 103488000. Its totient is φ = 48776112.

The previous prime is 75378943. The next prime is 75378959. The reversal of 75378957 is 75987357.

It is not a de Polignac number, because 75378957 - 2⁶ = 75378893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75378959) 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 15 ways as a sum of consecutive naturals, for example, 19794 + ... + 23292.

It is an arithmetic number, because the mean of its divisors is an integer number (6468000).

Almost surely, 2^75378957 is an apocalyptic number.

It is an amenable number.

75378957 is a deficient number, since it is larger than the sum of its proper divisors (28109043).

75378957 is a wasteful number, since it uses less digits than its factorization.

75378957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712.

The product of its digits is 1852200, while the sum is 51.

The square root of 75378957 is about 8682.1055625925. The cubic root of 75378957 is about 422.4254168500.

Subtracting 75378957 from its reverse (75987357), we obtain a square (608400 = 780²).

The spelling of 75378957 in words is "seventy-five million, three hundred seventy-eight thousand, nine hundred fifty-seven".