152721105 has 32 divisors (see below), whose sum is σ = 258975360. Its totient is φ = 76715520.

The previous prime is 152721091. The next prime is 152721119. The reversal of 152721105 is 501127251.

It is an interprime number because it is at equal distance from previous prime (152721091) and next prime (152721119).

It is not a de Polignac number, because 152721105 - 2¹⁷ = 152590033 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13554 + ... + 22116.

It is an arithmetic number, because the mean of its divisors is an integer number (8092980).

Almost surely, 2^152721105 is an apocalyptic number.

152721105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

152721105 is a deficient number, since it is larger than the sum of its proper divisors (106254255).

152721105 is a wasteful number, since it uses less digits than its factorization.

152721105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8641.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 152721105 is about 12358.0380724450. The cubic root of 152721105 is about 534.5229450495.

Adding to 152721105 its reverse (501127251), we get a palindrome (653848356).

The spelling of 152721105 in words is "one hundred fifty-two million, seven hundred twenty-one thousand, one hundred five".