145770451 has 8 divisors (see below), whose sum is σ = 153694800. Its totient is φ = 137871360.

The previous prime is 145770439. The next prime is 145770497. The reversal of 145770451 is 154077541.

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

It is a cyclic number.

It is not a de Polignac number, because 145770451 - 2⁷ = 145770323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145770431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6195 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (19211850).

Almost surely, 2^145770451 is an apocalyptic number.

145770451 is a deficient number, since it is larger than the sum of its proper divisors (7924349).

145770451 is a wasteful number, since it uses less digits than its factorization.

145770451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12629.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 145770451 is about 12073.5434318182. The cubic root of 145770451 is about 526.2876341796.

The spelling of 145770451 in words is "one hundred forty-five million, seven hundred seventy thousand, four hundred fifty-one".