157448081 has 4 divisors (see below), whose sum is σ = 179940672. Its totient is φ = 134955492.

The previous prime is 157448063. The next prime is 157448129. The reversal of 157448081 is 180844751.

It is a happy number.

157448081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180844751 = 163 ⋅1109477.

It is not a de Polignac number, because 157448081 - 2¹⁸ = 157185937 is a prime.

It is a super-2 number, since 2×157448081² = 49579796421165122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157448051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11246285 + ... + 11246298.

It is an arithmetic number, because the mean of its divisors is an integer number (44985168).

Almost surely, 2^157448081 is an apocalyptic number.

It is an amenable number.

157448081 is a deficient number, since it is larger than the sum of its proper divisors (22492591).

157448081 is an equidigital number, since it uses as much as digits as its factorization.

157448081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22492590.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 157448081 is about 12547.8317250432. The cubic root of 157448081 is about 539.9818020845.

The spelling of 157448081 in words is "one hundred fifty-seven million, four hundred forty-eight thousand, eighty-one".