145621054 has 8 divisors (see below), whose sum is σ = 229928040. Its totient is φ = 68978376.

The previous prime is 145621019. The next prime is 145621061. The reversal of 145621054 is 450126541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1916029 + ... + 1916104.

It is an arithmetic number, because the mean of its divisors is an integer number (28741005).

Almost surely, 2^145621054 is an apocalyptic number.

145621054 is a deficient number, since it is larger than the sum of its proper divisors (84306986).

145621054 is a wasteful number, since it uses less digits than its factorization.

145621054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832154.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 145621054 is about 12067.3548882926. The cubic root of 145621054 is about 526.1077790968.

Adding to 145621054 its reverse (450126541), we get a palindrome (595747595).

The spelling of 145621054 in words is "one hundred forty-five million, six hundred twenty-one thousand, fifty-four".