156138550 has 12 divisors (see below), whose sum is σ = 290417796. Its totient is φ = 62455400.

The previous prime is 156138539. The next prime is 156138571. The reversal of 156138550 is 55831651.

It is a super-2 number, since 2×156138550² = 48758493592205000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1561336 + ... + 1561435.

It is an arithmetic number, because the mean of its divisors is an integer number (24201483).

Almost surely, 2^156138550 is an apocalyptic number.

156138550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156138550 is a deficient number, since it is larger than the sum of its proper divisors (134279246).

156138550 is a wasteful number, since it uses less digits than its factorization.

156138550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122783 (or 3122778 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 156138550 is about 12495.5412047658. The cubic root of 156138550 is about 538.4805824505.

The spelling of 156138550 in words is "one hundred fifty-six million, one hundred thirty-eight thousand, five hundred fifty".