10121551 has 8 divisors (see below), whose sum is σ = 11422800. Its totient is φ = 8883840.

The previous prime is 10121543. The next prime is 10121561. The reversal of 10121551 is 15512101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10121551 - 2³ = 10121543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15546 + ... + 16183.

It is an arithmetic number, because the mean of its divisors is an integer number (1427850).

Almost surely, 2^10121551 is an apocalyptic number.

10121551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10121551 is a deficient number, since it is larger than the sum of its proper divisors (1301249).

10121551 is a wasteful number, since it uses less digits than its factorization.

10121551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31769.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 10121551 is about 3181.4385111141. The cubic root of 10121551 is about 216.3128682192.

Adding to 10121551 its reverse (15512101), we get a palindrome (25633652).

The spelling of 10121551 in words is "ten million, one hundred twenty-one thousand, five hundred fifty-one".