157786401 has 8 divisors (see below), whose sum is σ = 222757344. Its totient is φ = 99003200.

The previous prime is 157786399. The next prime is 157786423. The reversal of 157786401 is 104687751.

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 157786401 - 2¹ = 157786399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 157786401.

It is not an unprimeable number, because it can be changed into a prime (157786441) 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, 1546875 + ... + 1546976.

It is an arithmetic number, because the mean of its divisors is an integer number (27844668).

Almost surely, 2^157786401 is an apocalyptic number.

It is an amenable number.

157786401 is a deficient number, since it is larger than the sum of its proper divisors (64970943).

157786401 is a wasteful number, since it uses less digits than its factorization.

157786401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093871.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 157786401 is about 12561.3057044242. The cubic root of 157786401 is about 540.3682912845.

It can be divided in two parts, 1577 and 86401, that added together give a palindrome (87978).

The spelling of 157786401 in words is "one hundred fifty-seven million, seven hundred eighty-six thousand, four hundred one".