155247015 has 64 divisors (see below), whose sum is σ = 312238080. Its totient is φ = 63987840.

The previous prime is 155247011. The next prime is 155247031. The reversal of 155247015 is 510742551.

It is not a de Polignac number, because 155247015 - 2² = 155247011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155247011) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 160062 + ... + 161028.

It is an arithmetic number, because the mean of its divisors is an integer number (4878720).

Almost surely, 2^155247015 is an apocalyptic number.

155247015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155247015 is an abundant number, since it is smaller than the sum of its proper divisors (156991065).

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

155247015 is a wasteful number, since it uses less digits than its factorization.

155247015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 155247015 is about 12459.8160098775. The cubic root of 155247015 is about 537.4537360577.

Adding to 155247015 its reverse (510742551), we get a palindrome (665989566).

The spelling of 155247015 in words is "one hundred fifty-five million, two hundred forty-seven thousand, fifteen".