145637499 has 8 divisors (see below), whose sum is σ = 221923840. Its totient is φ = 83221416.

The previous prime is 145637497. The next prime is 145637533. The reversal of 145637499 is 994736541.

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

It is not a de Polignac number, because 145637499 - 2¹ = 145637497 is a prime.

It is a super-2 number, since 2×145637499² = 42420562229950002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145637491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3467539 + ... + 3467580.

It is an arithmetic number, because the mean of its divisors is an integer number (27740480).

Almost surely, 2^145637499 is an apocalyptic number.

145637499 is a deficient number, since it is larger than the sum of its proper divisors (76286341).

145637499 is an equidigital number, since it uses as much as digits as its factorization.

145637499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935129.

The product of its digits is 816480, while the sum is 48.

The square root of 145637499 is about 12068.0362528458. The cubic root of 145637499 is about 526.1275828192.

The spelling of 145637499 in words is "one hundred forty-five million, six hundred thirty-seven thousand, four hundred ninety-nine".