115401553 has 8 divisors (see below), whose sum is σ = 116928000. Its totient is φ = 113885328.

The previous prime is 115401547. The next prime is 115401571. The reversal of 115401553 is 355104511.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115401553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115401053) 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, 21648 + ... + 26446.

It is an arithmetic number, because the mean of its divisors is an integer number (14616000).

Almost surely, 2^115401553 is an apocalyptic number.

It is an amenable number.

115401553 is a deficient number, since it is larger than the sum of its proper divisors (1526447).

115401553 is a wasteful number, since it uses less digits than its factorization.

115401553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 115401553 is about 10742.5114847507. The cubic root of 115401553 is about 486.8597642337.

It can be divided in two parts, 115401 and 553, that multiplied together give a triangular number (63816753 = T₁₁₂₉₇).

The spelling of 115401553 in words is "one hundred fifteen million, four hundred one thousand, five hundred fifty-three".