145615251 has 12 divisors (see below), whose sum is σ = 206247512. Its totient is φ = 91365888.

The previous prime is 145615237. The next prime is 145615271. The reversal of 145615251 is 152516541.

It is not a de Polignac number, because 145615251 - 2¹⁴ = 145598867 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 (145615201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83110 + ... + 84843.

Almost surely, 2^145615251 is an apocalyptic number.

145615251 is a deficient number, since it is larger than the sum of its proper divisors (60632261).

145615251 is a wasteful number, since it uses less digits than its factorization.

145615251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167990 (or 167973 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 145615251 is about 12067.1144438097. The cubic root of 145615251 is about 526.1007905378.

The spelling of 145615251 in words is "one hundred forty-five million, six hundred fifteen thousand, two hundred fifty-one".