157549901 has 8 divisors (see below), whose sum is σ = 159249024. Its totient is φ = 155858560.

The previous prime is 157549891. The next prime is 157549907. The reversal of 157549901 is 109945751.

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

It is not a de Polignac number, because 157549901 - 2²² = 153355597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157549907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44540 + ... + 47946.

It is an arithmetic number, because the mean of its divisors is an integer number (19906128).

Almost surely, 2^157549901 is an apocalyptic number.

It is an amenable number.

157549901 is a deficient number, since it is larger than the sum of its proper divisors (1699123).

157549901 is a wasteful number, since it uses less digits than its factorization.

157549901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 157549901 is about 12551.8883439903. Note that the first 3 decimals coincide. The cubic root of 157549901 is about 540.0981771654.

The spelling of 157549901 in words is "one hundred fifty-seven million, five hundred forty-nine thousand, nine hundred one".