155201145 has 64 divisors (see below), whose sum is σ = 279659520. Its totient is φ = 72864000.

The previous prime is 155201099. The next prime is 155201173. The reversal of 155201145 is 541102551.

It is not a de Polignac number, because 155201145 - 2⁷ = 155201017 is a prime.

It is a super-2 number, since 2×155201145² = 48174790818622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1116486 + ... + 1116624.

It is an arithmetic number, because the mean of its divisors is an integer number (4369680).

Almost surely, 2^155201145 is an apocalyptic number.

155201145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155201145 is a deficient number, since it is larger than the sum of its proper divisors (124458375).

155201145 is a wasteful number, since it uses less digits than its factorization.

155201145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 155201145 is about 12457.9751565012. The cubic root of 155201145 is about 537.4007979893.

Adding to 155201145 its reverse (541102551), we get a palindrome (696303696).

The spelling of 155201145 in words is "one hundred fifty-five million, two hundred one thousand, one hundred forty-five".