145523537 has 8 divisors (see below), whose sum is σ = 150676200. Its totient is φ = 140379904.

The previous prime is 145523533. The next prime is 145523549. The reversal of 145523537 is 735325541.

It can be written as a sum of positive squares in 4 ways, for example, as 1547536 + 143976001 = 1244^2 + 11999^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 145523537 - 2² = 145523533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145523497 and 145523506.

It is not an unprimeable number, because it can be changed into a prime (145523533) 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, 60563 + ... + 62919.

It is an arithmetic number, because the mean of its divisors is an integer number (18834525).

Almost surely, 2^145523537 is an apocalyptic number.

It is an amenable number.

145523537 is a deficient number, since it is larger than the sum of its proper divisors (5152663).

145523537 is a wasteful number, since it uses less digits than its factorization.

145523537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4515.

The product of its digits is 63000, while the sum is 35.

The square root of 145523537 is about 12063.3136824009. The cubic root of 145523537 is about 525.9903146062.

The spelling of 145523537 in words is "one hundred forty-five million, five hundred twenty-three thousand, five hundred thirty-seven".