101245551 has 8 divisors (see below), whose sum is σ = 147266304. Its totient is φ = 61360920.

The previous prime is 101245549. The next prime is 101245553. The reversal of 101245551 is 155542101.

It is an interprime number because it is at equal distance from previous prime (101245549) and next prime (101245553).

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

It is not a de Polignac number, because 101245551 - 2¹ = 101245549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101245553) 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 7 ways as a sum of consecutive naturals, for example, 1533991 + ... + 1534056.

It is an arithmetic number, because the mean of its divisors is an integer number (18408288).

Almost surely, 2^101245551 is an apocalyptic number.

101245551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101245551 is a deficient number, since it is larger than the sum of its proper divisors (46020753).

101245551 is a wasteful number, since it uses less digits than its factorization.

101245551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068061.

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 101245551 is about 10062.0848237331. The cubic root of 101245551 is about 466.0780490882.

Adding to 101245551 its reverse (155542101), we get a palindrome (256787652).

The spelling of 101245551 in words is "one hundred one million, two hundred forty-five thousand, five hundred fifty-one".