157213473 has 8 divisors (see below), whose sum is σ = 209932128. Its totient is φ = 104651904.

The previous prime is 157213411. The next prime is 157213489. The reversal of 157213473 is 374312751.

157213473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 157213473 - 2⁹ = 157212961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157213403) 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, 36915 + ... + 40952.

It is an arithmetic number, because the mean of its divisors is an integer number (26241516).

Almost surely, 2^157213473 is an apocalyptic number.

It is an amenable number.

157213473 is a deficient number, since it is larger than the sum of its proper divisors (52718655).

157213473 is an equidigital number, since it uses as much as digits as its factorization.

157213473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78543.

The product of its digits is 17640, while the sum is 33.

The square root of 157213473 is about 12538.4796925305. The cubic root of 157213473 is about 539.7134659564.

The spelling of 157213473 in words is "one hundred fifty-seven million, two hundred thirteen thousand, four hundred seventy-three".