145777307 has 4 divisors (see below), whose sum is σ = 156990960. Its totient is φ = 134563656.

The previous prime is 145777297. The next prime is 145777321. The reversal of 145777307 is 703777541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145777307 - 2¹⁰ = 145776283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145777337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5606807 + ... + 5606832.

It is an arithmetic number, because the mean of its divisors is an integer number (39247740).

Almost surely, 2^145777307 is an apocalyptic number.

145777307 is a deficient number, since it is larger than the sum of its proper divisors (11213653).

145777307 is a wasteful number, since it uses less digits than its factorization.

145777307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11213652.

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 145777307 is about 12073.8273550685. The cubic root of 145777307 is about 526.2958849864.

The spelling of 145777307 in words is "one hundred forty-five million, seven hundred seventy-seven thousand, three hundred seven".