149257445 has 16 divisors (see below), whose sum is σ = 193635840. Its totient is φ = 110061504.

The previous prime is 149257439. The next prime is 149257447. The reversal of 149257445 is 544752941.

It is a cyclic number.

It is not a de Polignac number, because 149257445 - 2¹⁰ = 149256421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149257447) 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, 17717 + ... + 24746.

It is an arithmetic number, because the mean of its divisors is an integer number (12102240).

Almost surely, 2^149257445 is an apocalyptic number.

It is an amenable number.

149257445 is a deficient number, since it is larger than the sum of its proper divisors (44378395).

149257445 is a wasteful number, since it uses less digits than its factorization.

149257445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42524.

The product of its digits is 201600, while the sum is 41.

The square root of 149257445 is about 12217.0964226366. The cubic root of 149257445 is about 530.4510755811.

The spelling of 149257445 in words is "one hundred forty-nine million, two hundred fifty-seven thousand, four hundred forty-five".