101621051 has 12 divisors (see below), whose sum is σ = 118654848. Its totient is φ = 86777712.

The previous prime is 101621041. The next prime is 101621081. The reversal of 101621051 is 150126101.

It is a de Polignac number, because none of the positive numbers 2^k-101621051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101621011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9830 + ... + 17316.

It is an arithmetic number, because the mean of its divisors is an integer number (9887904).

Almost surely, 2^101621051 is an apocalyptic number.

101621051 is a deficient number, since it is larger than the sum of its proper divisors (17033797).

101621051 is an equidigital number, since it uses as much as digits as its factorization.

101621051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7778 (or 7771 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 101621051 is about 10080.7267099153. The cubic root of 101621051 is about 466.6535357416.

Adding to 101621051 its reverse (150126101), we get a palindrome (251747152).

The spelling of 101621051 in words is "one hundred one million, six hundred twenty-one thousand, fifty-one".