154156531 has 8 divisors (see below), whose sum is σ = 155411424. Its totient is φ = 152905920.

The previous prime is 154156523. The next prime is 154156543. The reversal of 154156531 is 135651451.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154156531 - 2³ = 154156523 is a prime.

It is a super-2 number, since 2×154156531² = 47528472099907922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154156493 and 154156502.

It is not an unprimeable number, because it can be changed into a prime (154156031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126481 + ... + 127693.

It is an arithmetic number, because the mean of its divisors is an integer number (19426428).

Almost surely, 2^154156531 is an apocalyptic number.

154156531 is a deficient number, since it is larger than the sum of its proper divisors (1254893).

154156531 is a wasteful number, since it uses less digits than its factorization.

154156531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

The product of its digits is 9000, while the sum is 31.

The square root of 154156531 is about 12415.9788579073. The cubic root of 154156531 is about 536.1923863388.

The spelling of 154156531 in words is "one hundred fifty-four million, one hundred fifty-six thousand, five hundred thirty-one".