105216457 has 8 divisors (see below), whose sum is σ = 106483520. Its totient is φ = 103954320.

The previous prime is 105216443. The next prime is 105216479. The reversal of 105216457 is 754612501.

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 105216457 - 2¹¹ = 105214409 is a prime.

It is a super-2 number, since 2×105216457² = 22141005647265698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105216407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57919 + ... + 59707.

It is an arithmetic number, because the mean of its divisors is an integer number (13310440).

Almost surely, 2^105216457 is an apocalyptic number.

It is an amenable number.

105216457 is a deficient number, since it is larger than the sum of its proper divisors (1267063).

105216457 is a wasteful number, since it uses less digits than its factorization.

105216457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 105216457 is about 10257.5073482791. The cubic root of 105216457 is about 472.0933589747.

Adding to 105216457 its reverse (754612501), we get a palindrome (859828958).

The spelling of 105216457 in words is "one hundred five million, two hundred sixteen thousand, four hundred fifty-seven".