137321745 has 16 divisors (see below), whose sum is σ = 239689152. Its totient is φ = 66580160.

The previous prime is 137321713. The next prime is 137321783. The reversal of 137321745 is 547123731.

It is not a de Polignac number, because 137321745 - 2⁵ = 137321713 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 415962 + ... + 416291.

It is an arithmetic number, because the mean of its divisors is an integer number (14980572).

Almost surely, 2^137321745 is an apocalyptic number.

137321745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137321745 is a deficient number, since it is larger than the sum of its proper divisors (102367407).

137321745 is a wasteful number, since it uses less digits than its factorization.

137321745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832272.

The product of its digits is 17640, while the sum is 33.

The square root of 137321745 is about 11718.4361157963. The cubic root of 137321745 is about 515.9169199515.

The spelling of 137321745 in words is "one hundred thirty-seven million, three hundred twenty-one thousand, seven hundred forty-five".