501161650 has 48 divisors (see below), whose sum is σ = 1019041920. Its totient is φ = 181857600.

The previous prime is 501161599. The next prime is 501161663. The reversal of 501161650 is 56161105.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 481831 + ... + 482869.

It is an arithmetic number, because the mean of its divisors is an integer number (21230040).

Almost surely, 2^501161650 is an apocalyptic number.

501161650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

501161650 is an abundant number, since it is smaller than the sum of its proper divisors (517880270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501161650 is a wasteful number, since it uses less digits than its factorization.

501161650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 501161650 is about 22386.6399890649. The cubic root of 501161650 is about 794.3147187221.

The spelling of 501161650 in words is "five hundred one million, one hundred sixty-one thousand, six hundred fifty".