145155157 has 4 divisors (see below), whose sum is σ = 165891616. Its totient is φ = 124418700.

The previous prime is 145155151. The next prime is 145155161. The reversal of 145155157 is 751551541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751551541 = 13 ⋅57811657.

It is not a de Polignac number, because 145155157 - 2³ = 145155149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145155151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10368219 + ... + 10368232.

It is an arithmetic number, because the mean of its divisors is an integer number (41472904).

Almost surely, 2^145155157 is an apocalyptic number.

It is an amenable number.

145155157 is a deficient number, since it is larger than the sum of its proper divisors (20736459).

145155157 is an equidigital number, since it uses as much as digits as its factorization.

145155157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20736458.

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

The square root of 145155157 is about 12048.0354000144. The cubic root of 145155157 is about 525.5461068730.

The spelling of 145155157 in words is "one hundred forty-five million, one hundred fifty-five thousand, one hundred fifty-seven".