1550720530 has 16 divisors (see below), whose sum is σ = 2938207680. Its totient is φ = 587641392.

The previous prime is 1550720519. The next prime is 1550720593. The reversal of 1550720530 is 350270551.

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, 4080654 + ... + 4081033.

It is an arithmetic number, because the mean of its divisors is an integer number (183637980).

Almost surely, 2^1550720530 is an apocalyptic number.

1550720530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1550720530 is a deficient number, since it is larger than the sum of its proper divisors (1387487150).

1550720530 is a wasteful number, since it uses less digits than its factorization.

1550720530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8161713.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 1550720530 is about 39379.1890470081. The cubic root of 1550720530 is about 1157.4738253811.

The spelling of 1550720530 in words is "one billion, five hundred fifty million, seven hundred twenty thousand, five hundred thirty".