505251694501 has 16 divisors (see below), whose sum is σ = 533477564928. Its totient is φ = 477950457600.

The previous prime is 505251694483. The next prime is 505251694513. The reversal of 505251694501 is 105496152505.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 505251694501 - 2¹⁹ = 505251170213 is a prime.

It is a super-2 number, since 2×505251694501² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505251694601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804405 + ... + 1287466.

It is an arithmetic number, because the mean of its divisors is an integer number (33342347808).

Almost surely, 2^505251694501 is an apocalyptic number.

It is an amenable number.

505251694501 is a deficient number, since it is larger than the sum of its proper divisors (28225870427).

505251694501 is a wasteful number, since it uses less digits than its factorization.

505251694501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092092.

The product of its (nonzero) digits is 270000, while the sum is 43.

The spelling of 505251694501 in words is "five hundred five billion, two hundred fifty-one million, six hundred ninety-four thousand, five hundred one".