101399553 has 8 divisors (see below), whose sum is σ = 150221600. Its totient is φ = 67599684.

The previous prime is 101399497. The next prime is 101399567. The reversal of 101399553 is 355993101.

101399553 is a `hidden beast` number, since 1 + 0 + 13 + 99 + 553 = 666.

It is not a de Polignac number, because 101399553 - 2⁶ = 101399489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101399953) 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, 1877743 + ... + 1877796.

It is an arithmetic number, because the mean of its divisors is an integer number (18777700).

Almost surely, 2^101399553 is an apocalyptic number.

It is an amenable number.

101399553 is a deficient number, since it is larger than the sum of its proper divisors (48822047).

101399553 is an equidigital number, since it uses as much as digits as its factorization.

101399553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755548 (or 3755542 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 36.

The square root of 101399553 is about 10069.7345049410. The cubic root of 101399553 is about 466.3142424782.

The spelling of 101399553 in words is "one hundred one million, three hundred ninety-nine thousand, five hundred fifty-three".