145411774 has 4 divisors (see below), whose sum is σ = 218117664. Its totient is φ = 72705886.

The previous prime is 145411759. The next prime is 145411781. The reversal of 145411774 is 477114541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 477114541 = 43 ⋅11095687.

It is a super-2 number, since 2×145411774² = 42289168035654152, which contains 22 as substring.

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, 36352942 + ... + 36352945.

It is an arithmetic number, because the mean of its divisors is an integer number (54529416).

Almost surely, 2^145411774 is an apocalyptic number.

145411774 is a deficient number, since it is larger than the sum of its proper divisors (72705890).

145411774 is an equidigital number, since it uses as much as digits as its factorization.

145411774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72705889.

The product of its digits is 15680, while the sum is 34.

The square root of 145411774 is about 12058.6804419057. The cubic root of 145411774 is about 525.8556254863.

The spelling of 145411774 in words is "one hundred forty-five million, four hundred eleven thousand, seven hundred seventy-four".