145027774 has 4 divisors (see below), whose sum is σ = 217541664. Its totient is φ = 72513886.

The previous prime is 145027711. The next prime is 145027801. The reversal of 145027774 is 477720541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 477720541 = 73 ⋅6544117.

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, 36256942 + ... + 36256945.

It is an arithmetic number, because the mean of its divisors is an integer number (54385416).

Almost surely, 2^145027774 is an apocalyptic number.

145027774 is a deficient number, since it is larger than the sum of its proper divisors (72513890).

145027774 is an equidigital number, since it uses as much as digits as its factorization.

145027774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72513889.

The product of its (nonzero) digits is 54880, while the sum is 37.

The square root of 145027774 is about 12042.7477761514. The cubic root of 145027774 is about 525.3923283606.

The spelling of 145027774 in words is "one hundred forty-five million, twenty-seven thousand, seven hundred seventy-four".