75442797 has 12 divisors (see below), whose sum is σ = 111029724. Its totient is φ = 49345920.

The previous prime is 75442789. The next prime is 75442813. The reversal of 75442797 is 79724457.

It can be written as a sum of positive squares in 2 ways, for example, as 42850116 + 32592681 = 6546^2 + 5709^2 .

It is not a de Polignac number, because 75442797 - 2³ = 75442789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75442727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78604 + ... + 79557.

It is an arithmetic number, because the mean of its divisors is an integer number (9252477).

Almost surely, 2^75442797 is an apocalyptic number.

It is an amenable number.

75442797 is a deficient number, since it is larger than the sum of its proper divisors (35586927).

75442797 is a wasteful number, since it uses less digits than its factorization.

75442797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158220 (or 158217 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 75442797 is about 8685.7813120064. The cubic root of 75442797 is about 422.5446368115.

The spelling of 75442797 in words is "seventy-five million, four hundred forty-two thousand, seven hundred ninety-seven".