145490054 has 4 divisors (see below), whose sum is σ = 218235084. Its totient is φ = 72745026.

The previous prime is 145489999. The next prime is 145490089. The reversal of 145490054 is 450094541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450094541 = 13 ⋅34622657.

It is a self number, because there is not a number n which added to its sum of digits gives 145490054.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36372512 + ... + 36372515.

It is an arithmetic number, because the mean of its divisors is an integer number (54558771).

Almost surely, 2^145490054 is an apocalyptic number.

145490054 is a deficient number, since it is larger than the sum of its proper divisors (72745030).

145490054 is an equidigital number, since it uses as much as digits as its factorization.

145490054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72745029.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 145490054 is about 12061.9257998049. The cubic root of 145490054 is about 525.9499704232.

The spelling of 145490054 in words is "one hundred forty-five million, four hundred ninety thousand, fifty-four".