157443061 has 4 divisors (see below), whose sum is σ = 157689324. Its totient is φ = 157196800.

The previous prime is 157443049. The next prime is 157443067. The reversal of 157443061 is 160344751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160344751 = 7 ⋅22906393.

It can be written as a sum of positive squares in 2 ways, for example, as 101103025 + 56340036 = 10055^2 + 7506^2 .

It is a cyclic number.

It is not a de Polignac number, because 157443061 - 2¹³ = 157434869 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157443067) 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, 122170 + ... + 123451.

It is an arithmetic number, because the mean of its divisors is an integer number (39422331).

Almost surely, 2^157443061 is an apocalyptic number.

It is an amenable number.

157443061 is a deficient number, since it is larger than the sum of its proper divisors (246263).

157443061 is an equidigital number, since it uses as much as digits as its factorization.

157443061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246262.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 157443061 is about 12547.6316888885. The cubic root of 157443061 is about 539.9760631822.

The spelling of 157443061 in words is "one hundred fifty-seven million, four hundred forty-three thousand, sixty-one".