157950305 has 4 divisors (see below), whose sum is σ = 189540372. Its totient is φ = 126360240.

The previous prime is 157950283. The next prime is 157950323. The reversal of 157950305 is 503059751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123387664 + 34562641 = 11108^2 + 5879^2 .

It is not a de Polignac number, because 157950305 - 2⁸ = 157950049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 15795026 + ... + 15795035.

It is an arithmetic number, because the mean of its divisors is an integer number (47385093).

Almost surely, 2^157950305 is an apocalyptic number.

It is an amenable number.

157950305 is a deficient number, since it is larger than the sum of its proper divisors (31590067).

157950305 is an equidigital number, since it uses as much as digits as its factorization.

157950305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31590066.

The product of its (nonzero) digits is 23625, while the sum is 35.

The square root of 157950305 is about 12567.8281735549. The cubic root of 157950305 is about 540.5553329097. Note that the first 3 decimals are identical.

The spelling of 157950305 in words is "one hundred fifty-seven million, nine hundred fifty thousand, three hundred five".