505621797 has 8 divisors (see below), whose sum is σ = 678457056. Its totient is φ = 334933872.

The previous prime is 505621793. The next prime is 505621801. The reversal of 505621797 is 797126505.

It is an interprime number because it is at equal distance from previous prime (505621793) and next prime (505621801).

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

It is not a de Polignac number, because 505621797 - 2² = 505621793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505621793) 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, 536283 + ... + 537224.

It is an arithmetic number, because the mean of its divisors is an integer number (84807132).

Almost surely, 2^505621797 is an apocalyptic number.

It is an amenable number.

505621797 is a deficient number, since it is larger than the sum of its proper divisors (172835259).

505621797 is a wasteful number, since it uses less digits than its factorization.

505621797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073667.

The product of its (nonzero) digits is 132300, while the sum is 42.

The square root of 505621797 is about 22486.0355999007. The cubic root of 505621797 is about 796.6641285572.

The spelling of 505621797 in words is "five hundred five million, six hundred twenty-one thousand, seven hundred ninety-seven".