145098551 has 4 divisors (see below), whose sum is σ = 156259992. Its totient is φ = 133937112.

The previous prime is 145098533. The next prime is 145098557. The reversal of 145098551 is 155890541.

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 145098551 - 2¹⁴ = 145082167 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 (145098557) 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 3 ways as a sum of consecutive naturals, for example, 5580701 + ... + 5580726.

It is an arithmetic number, because the mean of its divisors is an integer number (39064998).

Almost surely, 2^145098551 is an apocalyptic number.

145098551 is a deficient number, since it is larger than the sum of its proper divisors (11161441).

145098551 is a wasteful number, since it uses less digits than its factorization.

145098551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161440.

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 145098551 is about 12045.6859912584. The cubic root of 145098551 is about 525.4777824413.

It can be divided in two parts, 1450 and 98551, that added together give a palindrome (100001).

The spelling of 145098551 in words is "one hundred forty-five million, ninety-eight thousand, five hundred fifty-one".