145426251 has 8 divisors (see below), whose sum is σ = 194734800. Its totient is φ = 96534272.

The previous prime is 145426241. The next prime is 145426273. The reversal of 145426251 is 152624541.

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 145426251 - 2⁵ = 145426219 is a prime.

It is a super-2 number, since 2×145426251² = 42297588959830002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145426201) 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, 103326 + ... + 104723.

It is an arithmetic number, because the mean of its divisors is an integer number (24341850).

Almost surely, 2^145426251 is an apocalyptic number.

145426251 is a deficient number, since it is larger than the sum of its proper divisors (49308549).

145426251 is a wasteful number, since it uses less digits than its factorization.

145426251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208285.

The product of its digits is 9600, while the sum is 30.

The square root of 145426251 is about 12059.2806999423. The cubic root of 145426251 is about 525.8730760661.

The spelling of 145426251 in words is "one hundred forty-five million, four hundred twenty-six thousand, two hundred fifty-one".