145521054 has 96 divisors (see below), whose sum is σ = 391075776. Its totient is φ = 38154240.

The previous prime is 145521053. The next prime is 145521067. The reversal of 145521054 is 450125541.

145521054 is a `hidden beast` number, since 1 + 4 + 552 + 105 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145521053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86994 + ... + 88650.

It is an arithmetic number, because the mean of its divisors is an integer number (4073706).

Almost surely, 2^145521054 is an apocalyptic number.

145521054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145521054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195537888).

145521054 is an abundant number, since it is smaller than the sum of its proper divisors (245554722).

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

145521054 is a wasteful number, since it uses less digits than its factorization.

145521054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730 (or 1727 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 145521054 is about 12063.2107666243. The cubic root of 145521054 is about 525.9873230137.

Adding to 145521054 its reverse (450125541), we get a palindrome (595646595).

The spelling of 145521054 in words is "one hundred forty-five million, five hundred twenty-one thousand, fifty-four".