157727401 has 8 divisors (see below), whose sum is σ = 170477384. Its totient is φ = 145065600.

The previous prime is 157727389. The next prime is 157727407. The reversal of 157727401 is 104727751.

It can be written as a sum of positive squares in 4 ways, for example, as 250000 + 157477401 = 500^2 + 12549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157727401 - 2⁹ = 157726889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157727407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18300 + ... + 25501.

It is an arithmetic number, because the mean of its divisors is an integer number (21309673).

Almost surely, 2^157727401 is an apocalyptic number.

It is an amenable number.

157727401 is a deficient number, since it is larger than the sum of its proper divisors (12749983).

157727401 is a wasteful number, since it uses less digits than its factorization.

157727401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44091.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 157727401 is about 12558.9570028725. The cubic root of 157727401 is about 540.3009308032.

The spelling of 157727401 in words is "one hundred fifty-seven million, seven hundred twenty-seven thousand, four hundred one".