755136977 has 4 divisors (see below), whose sum is σ = 863013696. Its totient is φ = 647260260.

The previous prime is 755136973. The next prime is 755136979. The reversal of 755136977 is 779631557.

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: 779631557 = 13109 ⋅59473.

It is a cyclic number.

It is not a de Polignac number, because 755136977 - 2² = 755136973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (755136973) 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, 53938349 + ... + 53938362.

It is an arithmetic number, because the mean of its divisors is an integer number (215753424).

Almost surely, 2^755136977 is an apocalyptic number.

It is an amenable number.

755136977 is a deficient number, since it is larger than the sum of its proper divisors (107876719).

755136977 is a wasteful number, since it uses less digits than its factorization.

755136977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107876718.

The product of its digits is 1389150, while the sum is 50.

The square root of 755136977 is about 27479.7557667458. The cubic root of 755136977 is about 910.6299132598.

The spelling of 755136977 in words is "seven hundred fifty-five million, one hundred thirty-six thousand, nine hundred seventy-seven".