101071551 has 8 divisors (see below), whose sum is σ = 154013824. Its totient is φ = 57755160.

The previous prime is 101071547. The next prime is 101071567. The reversal of 101071551 is 155170101.

It is a happy number.

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

It is not a de Polignac number, because 101071551 - 2² = 101071547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 4812931 = 101071551 / (1 + 0 + 1 + 0 + 7 + 1 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101071541) 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, 2406445 + ... + 2406486.

It is an arithmetic number, because the mean of its divisors is an integer number (19251728).

Almost surely, 2^101071551 is an apocalyptic number.

101071551 is a deficient number, since it is larger than the sum of its proper divisors (52942273).

101071551 is an equidigital number, since it uses as much as digits as its factorization.

101071551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812941.

The product of its (nonzero) digits is 175, while the sum is 21.

The square root of 101071551 is about 10053.4347861813. The cubic root of 101071551 is about 465.8108963357.

The spelling of 101071551 in words is "one hundred one million, seventy-one thousand, five hundred fifty-one".