145522461 has 16 divisors (see below), whose sum is σ = 223824384. Its totient is φ = 82377264.

The previous prime is 145522457. The next prime is 145522469. The reversal of 145522461 is 164225541.

It is not a de Polignac number, because 145522461 - 2² = 145522457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145522469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30135 + ... + 34628.

It is an arithmetic number, because the mean of its divisors is an integer number (13989024).

Almost surely, 2^145522461 is an apocalyptic number.

It is an amenable number.

145522461 is a deficient number, since it is larger than the sum of its proper divisors (78301923).

145522461 is a wasteful number, since it uses less digits than its factorization.

145522461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64880.

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

The square root of 145522461 is about 12063.2690842905. The cubic root of 145522461 is about 525.9890182135.

The spelling of 145522461 in words is "one hundred forty-five million, five hundred twenty-two thousand, four hundred sixty-one".