75228896557 has 2 divisors, whose sum is σ = 75228896558. Its totient is φ = 75228896556.

The previous prime is 75228896489. The next prime is 75228896573. The reversal of 75228896557 is 75569882257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57575522601 + 17653373956 = 239949^2 + 132866^2 .

It is an emirp because it is prime and its reverse (75569882257) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75228896557 - 2¹⁵ = 75228863789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75228896357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37614448278 + 37614448279.

It is an arithmetic number, because the mean of its divisors is an integer number (37614448279).

Almost surely, 2^75228896557 is an apocalyptic number.

It is an amenable number.

75228896557 is a deficient number, since it is larger than the sum of its proper divisors (1).

75228896557 is an equidigital number, since it uses as much as digits as its factorization.

75228896557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672000, while the sum is 64.

The spelling of 75228896557 in words is "seventy-five billion, two hundred twenty-eight million, eight hundred ninety-six thousand, five hundred fifty-seven".