149473057 has 4 divisors (see below), whose sum is σ = 157340080. Its totient is φ = 141606036.

The previous prime is 149473043. The next prime is 149473087. The reversal of 149473057 is 750374941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149473057 - 2¹⁵ = 149440289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149473087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3933483 + ... + 3933520.

It is an arithmetic number, because the mean of its divisors is an integer number (39335020).

Almost surely, 2^149473057 is an apocalyptic number.

It is an amenable number.

149473057 is a deficient number, since it is larger than the sum of its proper divisors (7867023).

149473057 is an equidigital number, since it uses as much as digits as its factorization.

149473057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7867022.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 149473057 is about 12225.9174297882. The cubic root of 149473057 is about 530.7063762778.

The spelling of 149473057 in words is "one hundred forty-nine million, four hundred seventy-three thousand, fifty-seven".