157155145 has 8 divisors (see below), whose sum is σ = 215527104. Its totient is φ = 107763504.

The previous prime is 157155139. The next prime is 157155149. The reversal of 157155145 is 541551751.

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 157155145 - 2¹⁷ = 157024073 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157155145.

It is not an unprimeable number, because it can be changed into a prime (157155149) 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, 2245039 + ... + 2245108.

It is an arithmetic number, because the mean of its divisors is an integer number (26940888).

Almost surely, 2^157155145 is an apocalyptic number.

It is an amenable number.

157155145 is a deficient number, since it is larger than the sum of its proper divisors (58371959).

157155145 is an equidigital number, since it uses as much as digits as its factorization.

157155145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490159.

The product of its digits is 17500, while the sum is 34.

The square root of 157155145 is about 12536.1535169285. The cubic root of 157155145 is about 539.6467110733.

The spelling of 157155145 in words is "one hundred fifty-seven million, one hundred fifty-five thousand, one hundred forty-five".