157780343 has 16 divisors (see below), whose sum is σ = 187041600. Its totient is φ = 133005600.

The previous prime is 157780333. The next prime is 157780361. The reversal of 157780343 is 343087751.

It is not a de Polignac number, because 157780343 - 2⁴ = 157780327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 157780297 and 157780306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157780333) 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, 17153 + ... + 24693.

It is an arithmetic number, because the mean of its divisors is an integer number (11690100).

Almost surely, 2^157780343 is an apocalyptic number.

157780343 is a deficient number, since it is larger than the sum of its proper divisors (29261257).

157780343 is an frugal number, since it uses more digits than its factorization.

157780343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623 (or 7609 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 157780343 is about 12561.0645647572. The cubic root of 157780343 is about 540.3613756210.

The spelling of 157780343 in words is "one hundred fifty-seven million, seven hundred eighty thousand, three hundred forty-three".