152521101 has 12 divisors (see below), whose sum is σ = 221256828. Its totient is φ = 101242944.

The previous prime is 152521097. The next prime is 152521111. The reversal of 152521101 is 101125251.

It can be written as a sum of positive squares in 2 ways, for example, as 90269001 + 62252100 = 9501^2 + 7890^2 .

It is not a de Polignac number, because 152521101 - 2² = 152521097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152521111) 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 11 ways as a sum of consecutive naturals, for example, 34270 + ... + 38463.

It is an arithmetic number, because the mean of its divisors is an integer number (18438069).

Almost surely, 2^152521101 is an apocalyptic number.

It is an amenable number.

152521101 is a deficient number, since it is larger than the sum of its proper divisors (68735727).

152521101 is a wasteful number, since it uses less digits than its factorization.

152521101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72972 (or 72969 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 152521101 is about 12349.9433601940. The cubic root of 152521101 is about 534.2895055181.

Adding to 152521101 its reverse (101125251), we get a palindrome (253646352).

The spelling of 152521101 in words is "one hundred fifty-two million, five hundred twenty-one thousand, one hundred one".