150721573 has 2 divisors, whose sum is σ = 150721574. Its totient is φ = 150721572.

The previous prime is 150721561. The next prime is 150721601. The reversal of 150721573 is 375127051.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97970404 + 52751169 = 9898^2 + 7263^2 .

It is a cyclic number.

It is not a de Polignac number, because 150721573 - 2¹⁷ = 150590501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150721513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75360786 + 75360787.

It is an arithmetic number, because the mean of its divisors is an integer number (75360787).

Almost surely, 2^150721573 is an apocalyptic number.

It is an amenable number.

150721573 is a deficient number, since it is larger than the sum of its proper divisors (1).

150721573 is an equidigital number, since it uses as much as digits as its factorization.

150721573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 150721573 is about 12276.8714662979. The cubic root of 150721573 is about 532.1799062243.

The spelling of 150721573 in words is "one hundred fifty million, seven hundred twenty-one thousand, five hundred seventy-three".