145372077 has 18 divisors (see below), whose sum is σ = 218056878. Its totient is φ = 96910344.

The previous prime is 145372069. The next prime is 145372133. The reversal of 145372077 is 770273541.

145372077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 139854276 + 5517801 = 11826^2 + 2349^2 .

It is not a de Polignac number, because 145372077 - 2³ = 145372069 is a prime.

It is a super-2 number, since 2×145372077² = 42266081542587858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145371077) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4518 + ... + 17639.

It is an arithmetic number, because the mean of its divisors is an integer number (12114271).

Almost surely, 2^145372077 is an apocalyptic number.

It is an amenable number.

145372077 is a deficient number, since it is larger than the sum of its proper divisors (72684801).

145372077 is an frugal number, since it uses more digits than its factorization.

145372077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22181 (or 22160 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 145372077 is about 12057.0343368508. The cubic root of 145372077 is about 525.8077687687.

The spelling of 145372077 in words is "one hundred forty-five million, three hundred seventy-two thousand, seventy-seven".