103257621 has 24 divisors (see below), whose sum is σ = 156888576. Its totient is φ = 65351520.

The previous prime is 103257619. The next prime is 103257631. The reversal of 103257621 is 126752301.

It is a happy number.

103257621 is a `hidden beast` number, since 1 + 0 + 32 + 5 + 7 + 621 = 666.

It is not a de Polignac number, because 103257621 - 2¹ = 103257619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103257601) 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 23 ways as a sum of consecutive naturals, for example, 11296 + ... + 18278.

It is an arithmetic number, because the mean of its divisors is an integer number (6537024).

Almost surely, 2^103257621 is an apocalyptic number.

It is an amenable number.

103257621 is a deficient number, since it is larger than the sum of its proper divisors (53630955).

103257621 is a wasteful number, since it uses less digits than its factorization.

103257621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073 (or 7070 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 103257621 is about 10161.5757144254. The cubic root of 103257621 is about 469.1453019572.

It can be divided in two parts, 1032 and 57621, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 103257621 in words is "one hundred three million, two hundred fifty-seven thousand, six hundred twenty-one".