145323055400 has 48 divisors (see below), whose sum is σ = 337996519740. Its totient is φ = 58108505600.

The previous prime is 145323055349. The next prime is 145323055403. The reversal of 145323055400 is 4550323541.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13230060484 + 132092994916 = 115022^2 + 363446^2 .

It is a super-2 number, since 2×145323055400² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145323055403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439340 + ... + 695460.

Almost surely, 2^145323055400 is an apocalyptic number.

145323055400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145323055400 is an abundant number, since it is smaller than the sum of its proper divisors (192673464340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145323055400 is a wasteful number, since it uses less digits than its factorization.

145323055400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258974 (or 258965 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 145323055400 its reverse (4550323541), we get a palindrome (149873378941).

The spelling of 145323055400 in words is "one hundred forty-five billion, three hundred twenty-three million, fifty-five thousand, four hundred".