145461155 has 32 divisors (see below), whose sum is σ = 206064000. Its totient is φ = 98520576.

The previous prime is 145461143. The next prime is 145461157. The reversal of 145461155 is 551164541.

It is not a de Polignac number, because 145461155 - 2⁴ = 145461139 is a prime.

It is a super-2 number, since 2×145461155² = 42317895227868050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145461157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152159 + ... + 153111.

It is an arithmetic number, because the mean of its divisors is an integer number (6439500).

Almost surely, 2^145461155 is an apocalyptic number.

145461155 is a deficient number, since it is larger than the sum of its proper divisors (60602845).

145461155 is an frugal number, since it uses more digits than its factorization.

145461155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 1054 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 145461155 is about 12060.7277972766. The cubic root of 145461155 is about 525.9151445955.

The spelling of 145461155 in words is "one hundred forty-five million, four hundred sixty-one thousand, one hundred fifty-five".