155861453 has 8 divisors (see below), whose sum is σ = 170972256. Its totient is φ = 140907600.

The previous prime is 155861449. The next prime is 155861473. The reversal of 155861453 is 354168551.

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

It is a cyclic number.

It is not a de Polignac number, because 155861453 - 2² = 155861449 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 (155861413) 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, 37151 + ... + 41132.

It is an arithmetic number, because the mean of its divisors is an integer number (21371532).

Almost surely, 2^155861453 is an apocalyptic number.

It is an amenable number.

155861453 is a deficient number, since it is larger than the sum of its proper divisors (15110803).

155861453 is a wasteful number, since it uses less digits than its factorization.

155861453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78475.

The product of its digits is 72000, while the sum is 38.

The square root of 155861453 is about 12484.4484459667. The cubic root of 155861453 is about 538.1618490587.

The spelling of 155861453 in words is "one hundred fifty-five million, eight hundred sixty-one thousand, four hundred fifty-three".