Search a number
-
+
157445371 = 4114892579
BaseRepresentation
bin10010110001001…
…10110011111011
3101222021001110001
421120212303323
5310301222441
623342333431
73621156256
oct1130466373
9358231401
10157445371
1180968046
124488a277
1326807a55
1416ca609d
15dc50731
hex9626cfb

157445371 has 8 divisors (see below), whose sum is σ = 161456400. Its totient is φ = 153442560.

The previous prime is 157445339. The next prime is 157445383. The reversal of 157445371 is 173544751.

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 157445371 - 25 = 157445339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157445371.

It is not an unprimeable number, because it can be changed into a prime (157445671) 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, 59760 + ... + 62338.

It is an arithmetic number, because the mean of its divisors is an integer number (20182050).

Almost surely, 2157445371 is an apocalyptic number.

157445371 is a deficient number, since it is larger than the sum of its proper divisors (4011029).

157445371 is a wasteful number, since it uses less digits than its factorization.

157445371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109.

The product of its digits is 58800, while the sum is 37.

The square root of 157445371 is about 12547.7237377940. The cubic root of 157445371 is about 539.9787040070.

It can be divided in two parts, 15744 and 5371, that added together give a triangular number (21115 = T205).

The spelling of 157445371 in words is "one hundred fifty-seven million, four hundred forty-five thousand, three hundred seventy-one".

Divisors: 1 41 1489 2579 61049 105739 3840131 157445371