157167481 has 4 divisors (see below), whose sum is σ = 157216500. Its totient is φ = 157118464.

The previous prime is 157167463. The next prime is 157167523. The reversal of 157167481 is 184761751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184761751 = 173 ⋅1067987.

It can be written as a sum of positive squares in 2 ways, for example, as 65869456 + 91298025 = 8116^2 + 9555^2 .

It is a cyclic number.

It is not a de Polignac number, because 157167481 - 2²¹ = 155070329 is a prime.

It is a super-2 number, since 2×157167481² = 49403234167770722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157167401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19336 + ... + 26233.

It is an arithmetic number, because the mean of its divisors is an integer number (39304125).

Almost surely, 2^157167481 is an apocalyptic number.

It is an amenable number.

157167481 is a deficient number, since it is larger than the sum of its proper divisors (49019).

157167481 is an equidigital number, since it uses as much as digits as its factorization.

157167481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49018.

The product of its digits is 47040, while the sum is 40.

The square root of 157167481 is about 12536.6455242222. The cubic root of 157167481 is about 539.6608306824.

The spelling of 157167481 in words is "one hundred fifty-seven million, one hundred sixty-seven thousand, four hundred eighty-one".