121351545 has 48 divisors (see below), whose sum is σ = 241488000. Its totient is φ = 55222272.

The previous prime is 121351541. The next prime is 121351579. The reversal of 121351545 is 545153121.

It is not a de Polignac number, because 121351545 - 2² = 121351541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121351541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80206 + ... + 81704.

It is an arithmetic number, because the mean of its divisors is an integer number (5031000).

Almost surely, 2^121351545 is an apocalyptic number.

121351545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121351545 is a deficient number, since it is larger than the sum of its proper divisors (120136455).

121351545 is a wasteful number, since it uses less digits than its factorization.

121351545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774 (or 1771 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 121351545 is about 11015.9677287109. The cubic root of 121351545 is about 495.0872818235.

The spelling of 121351545 in words is "one hundred twenty-one million, three hundred fifty-one thousand, five hundred forty-five".