157755541 has 2 divisors, whose sum is σ = 157755542.
Its totient is φ = 157755540.
The previous prime is 157755517. The next prime is 157755601. The reversal of 157755541 is 145557751.
It can be divided in two parts, 15775 and 5541, that added together give a square (21316 = 1462).
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 156775441 + 980100 = 12521^2 + 990^2
It is a cyclic number.
It is not a de Polignac number, because 157755541 - 25 = 157755509 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 157755494 and 157755503.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (157755511) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78877770 + 78877771.
It is an arithmetic number, because the mean of its divisors is an integer number (78877771).
Almost surely, 2157755541 is an apocalyptic number.
It is an amenable number.
157755541 is a deficient number, since it is larger than the sum of its proper divisors (1).
157755541 is an equidigital number, since it uses as much as digits as its factorization.
157755541 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 122500, while the sum is 40.
The square root of 157755541 is about 12560.0772688706.
The cubic root of 157755541 is about 540.3330604226.
Note that the first 3 decimals are identical.
The spelling of 157755541 in words is "one hundred fifty-seven million, seven hundred fifty-five thousand, five hundred forty-one".