145270277 has 12 divisors (see below), whose sum is σ = 152521824. Its totient is φ = 138350520.

The previous prime is 145270249. The next prime is 145270283. The reversal of 145270277 is 772072541.

It is not a de Polignac number, because 145270277 - 2¹⁰ = 145269253 is a prime.

It is a super-2 number, since 2×145270277² = 42206906759313458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145270577) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164078 + ... + 164960.

It is an arithmetic number, because the mean of its divisors is an integer number (12710152).

Almost surely, 2^145270277 is an apocalyptic number.

It is an amenable number.

145270277 is a deficient number, since it is larger than the sum of its proper divisors (7251547).

145270277 is an equidigital number, since it uses as much as digits as its factorization.

145270277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 35.

The square root of 145270277 is about 12052.8119955469. The cubic root of 145270277 is about 525.6850039494.

The spelling of 145270277 in words is "one hundred forty-five million, two hundred seventy thousand, two hundred seventy-seven".