157051009 has 2 divisors, whose sum is σ = 157051010. Its totient is φ = 157051008.

The previous prime is 157051003. The next prime is 157051019. The reversal of 157051009 is 900150751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83777409 + 73273600 = 9153^2 + 8560^2 .

It is a cyclic number.

It is not a de Polignac number, because 157051009 - 2¹¹ = 157048961 is a prime.

It is not a weakly prime, because it can be changed into another prime (157051003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78525504 + 78525505.

It is an arithmetic number, because the mean of its divisors is an integer number (78525505).

Almost surely, 2^157051009 is an apocalyptic number.

It is an amenable number.

157051009 is a deficient number, since it is larger than the sum of its proper divisors (1).

157051009 is an equidigital number, since it uses as much as digits as its factorization.

157051009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 157051009 is about 12531.9994015321. Note that the first 3 decimals coincide. The cubic root of 157051009 is about 539.5274890416.

The spelling of 157051009 in words is "one hundred fifty-seven million, fifty-one thousand, nine".