137648515 has 4 divisors (see below), whose sum is σ = 165178224. Its totient is φ = 110118808.

The previous prime is 137648449. The next prime is 137648527. The reversal of 137648515 is 515846731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 515846731 = 1297 ⋅397723.

It is a cyclic number.

It is not a de Polignac number, because 137648515 - 2⁷ = 137648387 is a prime.

It is a super-2 number, since 2×137648515² = 37894227363410450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13764847 + ... + 13764856.

It is an arithmetic number, because the mean of its divisors is an integer number (41294556).

Almost surely, 2^137648515 is an apocalyptic number.

137648515 is a deficient number, since it is larger than the sum of its proper divisors (27529709).

137648515 is an equidigital number, since it uses as much as digits as its factorization.

137648515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27529708.

The product of its digits is 100800, while the sum is 40.

The square root of 137648515 is about 11732.3703913574. The cubic root of 137648515 is about 516.3258200525.

The spelling of 137648515 in words is "one hundred thirty-seven million, six hundred forty-eight thousand, five hundred fifteen".