145075274 has 4 divisors (see below), whose sum is σ = 217612914. Its totient is φ = 72537636.

The previous prime is 145075253. The next prime is 145075291. The reversal of 145075274 is 472570541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472570541 = 31 ⋅15244211.

It can be written as a sum of positive squares in only one way, i.e., 143832049 + 1243225 = 11993^2 + 1115^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36268817 + ... + 36268820.

Almost surely, 2^145075274 is an apocalyptic number.

145075274 is a deficient number, since it is larger than the sum of its proper divisors (72537640).

145075274 is an equidigital number, since it uses as much as digits as its factorization.

145075274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72537639.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 145075274 is about 12044.7197559761. The cubic root of 145075274 is about 525.4496815393.

The spelling of 145075274 in words is "one hundred forty-five million, seventy-five thousand, two hundred seventy-four".