55775277505 has 8 divisors (see below), whose sum is σ = 66952060992. Its totient is φ = 44605736688.

The previous prime is 55775277497. The next prime is 55775277529. The reversal of 55775277505 is 50577257755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55775277505 - 2³ = 55775277497 is a prime.

It is a super-2 number, since 2×55775277505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793709 + ... + 1824538.

It is an arithmetic number, because the mean of its divisors is an integer number (8369007624).

Almost surely, 2^55775277505 is an apocalyptic number.

It is an amenable number.

55775277505 is a deficient number, since it is larger than the sum of its proper divisors (11176783487).

55775277505 is a wasteful number, since it uses less digits than its factorization.

55775277505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3621335.

The product of its (nonzero) digits is 15006250, while the sum is 55.

The spelling of 55775277505 in words is "fifty-five billion, seven hundred seventy-five million, two hundred seventy-seven thousand, five hundred five".