157340447 has 16 divisors (see below), whose sum is σ = 179615232. Its totient is φ = 136429920.

The previous prime is 157340441. The next prime is 157340461. The reversal of 157340447 is 744043751.

157340447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 157340447 - 2⁶ = 157340383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157340441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122573 + ... + 123849.

It is an arithmetic number, because the mean of its divisors is an integer number (11225952).

Almost surely, 2^157340447 is an apocalyptic number.

157340447 is a deficient number, since it is larger than the sum of its proper divisors (22274785).

157340447 is a wasteful number, since it uses less digits than its factorization.

157340447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 157340447 is about 12543.5420436175. The cubic root of 157340447 is about 539.8587273330.

The spelling of 157340447 in words is "one hundred fifty-seven million, three hundred forty thousand, four hundred forty-seven".