145561278 has 16 divisors (see below), whose sum is σ = 297893376. Its totient is φ = 47391960.

The previous prime is 145561231. The next prime is 145561279. The reversal of 145561278 is 872165541.

It is a super-3 number, since 3×145561278³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145561279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281838 + ... + 282353.

It is an arithmetic number, because the mean of its divisors is an integer number (18618336).

Almost surely, 2^145561278 is an apocalyptic number.

145561278 is an abundant number, since it is smaller than the sum of its proper divisors (152332098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145561278 is a wasteful number, since it uses less digits than its factorization.

145561278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564239.

The product of its digits is 67200, while the sum is 39.

The square root of 145561278 is about 12064.8778692534. The cubic root of 145561278 is about 526.0357819008.

The spelling of 145561278 in words is "one hundred forty-five million, five hundred sixty-one thousand, two hundred seventy-eight".