505240542551 has 8 divisors (see below), whose sum is σ = 508167920304. Its totient is φ = 502318192320.

The previous prime is 505240542523. The next prime is 505240542559. The reversal of 505240542551 is 155245042505.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505240542551 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 (505240542559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055216 + ... + 1457381.

It is an arithmetic number, because the mean of its divisors is an integer number (63520990038).

Almost surely, 2^505240542551 is an apocalyptic number.

505240542551 is a deficient number, since it is larger than the sum of its proper divisors (2927377753).

505240542551 is a wasteful number, since it uses less digits than its factorization.

505240542551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513761.

The product of its (nonzero) digits is 200000, while the sum is 38.

The spelling of 505240542551 in words is "five hundred five billion, two hundred forty million, five hundred forty-two thousand, five hundred fifty-one".