115401551 has 4 divisors (see below), whose sum is σ = 118085352. Its totient is φ = 112717752.

The previous prime is 115401547. The next prime is 115401571. The reversal of 115401551 is 155104511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 115401551 - 2² = 115401547 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115401571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341836 + ... + 1341921.

It is an arithmetic number, because the mean of its divisors is an integer number (29521338).

Almost surely, 2^115401551 is an apocalyptic number.

115401551 is a deficient number, since it is larger than the sum of its proper divisors (2683801).

115401551 is an equidigital number, since it uses as much as digits as its factorization.

115401551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683800.

The product of its (nonzero) digits is 500, while the sum is 23.

The square root of 115401551 is about 10742.5113916626. The cubic root of 115401551 is about 486.8597614211.

The spelling of 115401551 in words is "one hundred fifteen million, four hundred one thousand, five hundred fifty-one".