145654531 has 8 divisors (see below), whose sum is σ = 159136704. Its totient is φ = 132212520.

The previous prime is 145654529. The next prime is 145654541. The reversal of 145654531 is 135456541.

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

It is not a de Polignac number, because 145654531 - 2¹ = 145654529 is a prime.

It is a super-2 number, since 2×145654531² = 42430484801659922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145654541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (19892088).

Almost surely, 2^145654531 is an apocalyptic number.

145654531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145654531 is a deficient number, since it is larger than the sum of its proper divisors (13482173).

145654531 is a wasteful number, since it uses less digits than its factorization.

145654531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20081.

The product of its digits is 36000, while the sum is 34.

The square root of 145654531 is about 12068.7418979776. The cubic root of 145654531 is about 526.1480918587.

The spelling of 145654531 in words is "one hundred forty-five million, six hundred fifty-four thousand, five hundred thirty-one".