12901545 has 32 divisors (see below), whose sum is σ = 23091840. Its totient is φ = 6834240.

The previous prime is 12901543. The next prime is 12901571. The reversal of 12901545 is 54510921.

12901545 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12901545 - 2¹ = 12901543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12901541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30435 + ... + 30855.

It is an arithmetic number, because the mean of its divisors is an integer number (721620).

Almost surely, 2^12901545 is an apocalyptic number.

12901545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12901545 is a deficient number, since it is larger than the sum of its proper divisors (10190295).

12901545 is a wasteful number, since it uses less digits than its factorization.

12901545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 12901545 is about 3591.8720745594. The cubic root of 12901545 is about 234.5383724938.

The spelling of 12901545 in words is "twelve million, nine hundred one thousand, five hundred forty-five".