145052554 has 4 divisors (see below), whose sum is σ = 217578834. Its totient is φ = 72526276.

The previous prime is 145052507. The next prime is 145052561. The reversal of 145052554 is 455250541.

145052554 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 112254025 + 32798529 = 10595^2 + 5727^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36263137 + ... + 36263140.

Almost surely, 2^145052554 is an apocalyptic number.

145052554 is a deficient number, since it is larger than the sum of its proper divisors (72526280).

145052554 is an equidigital number, since it uses as much as digits as its factorization.

145052554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72526279.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 145052554 is about 12043.7765671736. The cubic root of 145052554 is about 525.4222501705.

The spelling of 145052554 in words is "one hundred forty-five million, fifty-two thousand, five hundred fifty-four".