153440215 has 12 divisors (see below), whose sum is σ = 195598296. Its totient is φ = 115530368.

The previous prime is 153440201. The next prime is 153440227. The reversal of 153440215 is 512044351.

It is a happy number.

It is not a de Polignac number, because 153440215 - 2¹³ = 153432023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 153440215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51649 + ... + 54538.

It is an arithmetic number, because the mean of its divisors is an integer number (16299858).

Almost surely, 2^153440215 is an apocalyptic number.

153440215 is a deficient number, since it is larger than the sum of its proper divisors (42158081).

153440215 is a wasteful number, since it uses less digits than its factorization.

153440215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106226 (or 106209 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 153440215 is about 12387.0987321487. The cubic root of 153440215 is about 535.3605919126.

Adding to 153440215 its reverse (512044351), we get a palindrome (665484566).

The spelling of 153440215 in words is "one hundred fifty-three million, four hundred forty thousand, two hundred fifteen".