755503997 has 4 divisors (see below), whose sum is σ = 763292796. Its totient is φ = 747715200.

The previous prime is 755503981. The next prime is 755504003. The reversal of 755503997 is 799305557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 799305557 = 271 ⋅2949467.

It can be written as a sum of positive squares in 2 ways, for example, as 460145401 + 295358596 = 21451^2 + 17186^2 .

It is a cyclic number.

It is not a de Polignac number, because 755503997 - 2⁴ = 755503981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755593997) 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, 3894254 + ... + 3894447.

It is an arithmetic number, because the mean of its divisors is an integer number (190823199).

Almost surely, 2^755503997 is an apocalyptic number.

It is an amenable number.

755503997 is a deficient number, since it is larger than the sum of its proper divisors (7788799).

755503997 is an equidigital number, since it uses as much as digits as its factorization.

755503997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788798.

The product of its (nonzero) digits is 1488375, while the sum is 50.

The square root of 755503997 is about 27486.4329624635. The cubic root of 755503997 is about 910.7774208285. Note that the first 3 decimals are identical.

The spelling of 755503997 in words is "seven hundred fifty-five million, five hundred three thousand, nine hundred ninety-seven".