121525481 has 16 divisors (see below), whose sum is σ = 154002048. Its totient is φ = 93139200.

The previous prime is 121525447. The next prime is 121525483. The reversal of 121525481 is 184525121.

It is not a de Polignac number, because 121525481 - 2¹⁰ = 121524457 is a prime.

It is a super-2 number, since 2×121525481² = 29536885064562722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121525483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8240 + ... + 17633.

It is an arithmetic number, because the mean of its divisors is an integer number (9625128).

Almost surely, 2^121525481 is an apocalyptic number.

121525481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121525481 is a deficient number, since it is larger than the sum of its proper divisors (32476567).

121525481 is a wasteful number, since it uses less digits than its factorization.

121525481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25952.

The product of its digits is 3200, while the sum is 29.

The square root of 121525481 is about 11023.8596235620. The cubic root of 121525481 is about 495.3237089503.

The spelling of 121525481 in words is "one hundred twenty-one million, five hundred twenty-five thousand, four hundred eighty-one".