157548921 has 8 divisors (see below), whose sum is σ = 210135744. Its totient is φ = 104997360.

The previous prime is 157548917. The next prime is 157548953. The reversal of 157548921 is 129845751.

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

It is not a de Polignac number, because 157548921 - 2² = 157548917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157548901) 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, 4476 + ... + 18306.

It is an arithmetic number, because the mean of its divisors is an integer number (26266968).

Almost surely, 2^157548921 is an apocalyptic number.

It is an amenable number.

157548921 is a deficient number, since it is larger than the sum of its proper divisors (52586823).

157548921 is a wasteful number, since it uses less digits than its factorization.

157548921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17631.

The product of its digits is 100800, while the sum is 42.

The square root of 157548921 is about 12551.8493059788. The cubic root of 157548921 is about 540.0970573142.

The spelling of 157548921 in words is "one hundred fifty-seven million, five hundred forty-eight thousand, nine hundred twenty-one".